Heliu (Romanian Wikipedia)

Analysis of information sources in references of the Wikipedia article "Heliu" in Romanian language version.

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38doi.org

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27web.archive.org

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12nih.gov

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3worldcat.org

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2harvard.edu

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1usra.edu

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1thespacereview.com

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1ualberta.ca

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1stanford.edu

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1physiology.org

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1airliquide.ro

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acs.org (Global: 1,248^th place; Romanian: 789^th place)

acswebcontent.acs.org

„The Discovery of Helium in Natural Gas”. American Chemical Society. 2004. Arhivat din original la 20 mai 2006. Accesat în 20 iulie 2008.

agu.org (Global: 6,456^th place; Romanian: 4,966^th place)

Zartman, R. E.; Wasserburg, G. J.; Reynolds, J. H. (1961). „Helium Argon and Carbon în Natural Gases”. Journal of Geophysical Research. 66 (1): 277–306. doi:10.1029/JZ066i001p00277. Accesat în 21 iulie 2008.

aip.org (Global: 2,204^th place; Romanian: 2,742^nd place)

ptonline.aip.org

Kaplan, Karen H. (iunie 2007). „Helium shortage hampers research and industry”. Physics Today. 60 (6). American Institute of Physics. pp. 31–32. doi:10.1063/1.2754594. Arhivat din original la 4 decembrie 2008. Accesat în 20 iulie 2008.

airliquide.ro (Global: low place; Romanian: low place)

Fisa tehnica de securitate - Heliu compact^{[nefuncțională]}. airliquide.ro. Accesat la 10 februarie 2010.

airproducts.com (Global: low place; Romanian: low place)

Smith, E.M. (2003). „Challenges to the Worldwide Supply of Helium in the Next Decade” (PDF). Advances in Cryogenic Engineering. 49 A (710): 119–138. doi:10.1063/1.1774674. Arhivat din original (PDF) la 25 iunie 2008. Accesat în 20 iulie 2008.

archive.today (Global: 14^th place; Romanian: 121^st place)

Rostain JC, Lemaire C, Gardette-Chauffour MC, Doucet J, Naquet R (1983). „Estimation of human susceptibility to the high-pressure nervous syndrome”. J Appl Physiol. 54 (4): 1063–70. PMID 6853282. Arhivat din original la 28 iunie 2012. Accesat în 9 august 2008.

astronomynotes.com (Global: low place; Romanian: low place)

Strobel, Nick (2007). „Nick Strobel's Astronomy Notes”. Accesat în 25 septembrie 2007. |chapter= ignorat (ajutor)

balloonprofessional.co.uk (Global: low place; Romanian: low place)

Sir Norman Lockyer - discovery of the element that he named helium Arhivat în 21 septembrie 2009, la Wayback Machine." Balloon Professional Magazine, 07 Aug 2009.

books.google.com (Global: 3^rd place; Romanian: 6^th place)

Hablanian, M. H. (1997). High-vacuum technology: a practical guide. CRC Press. p. 493. ISBN 0824798341.

cam.ac.uk (Global: 670^th place; Romanian: 1,710^th place)

jbs.cam.ac.uk

Z. Cai (2007). Modelling Helium Markets (PDF). University of Cambridge. Arhivat din original (PDF) la 26 martie 2009. Accesat în 14 iulie 2008.

cern.ch (Global: 1,959^th place; Romanian: 2,088^th place)

doc.cern.ch

Hilleret, N. (1999). „Leak Detection”. În S. Turner. CERN Accelerator School, vacuum technology: proceedings: Scanticon Conference Centre, Snekersten, Denmark, 28 May – 3 June 1999 (PDF). Geneva, Switzerland: CERN. pp. 203–212.

visits.web.cern.ch

„CERN - LHC: Facts and Figures” (PDF). CERN. Arhivat din original (PDF) la 6 iulie 2011. Accesat în 30 aprilie 2008.

circuiteelectrice.ro (Global: low place; Romanian: 8,807^th place)

Fizica cuantică. circuiteelectrice.ro. Accesat la 11 februarie 2009.

doi.org (Global: 2^nd place; Romanian: 3^rd place)

Ramsay, William (1895). „On a Gas Showing the Spectrum of Helium, the Reputed Cause of D3 , One of the Lines in the Coronal Spectrum. Preliminary Note”. Proceedings of the Royal Society of London. 58: 65–67. doi:10.1098/rspl.1895.0006. ISSN 0370-1662.
Ramsay, William (1895). „Helium, a Gaseous Constituent of Certain Minerals. Part I”. Proceedings of the Royal Society of London. 58: 80–89. doi:10.1098/rspl.1895.0010.
Ramsay, William (1895). „Helium, a Gaseous Constituent of Certain Minerals. Part II--”. Proceedings of the Royal Society of London. 59: 325–330. doi:10.1098/rspl.1895.0097.
de Langlet, N. A. (1895). „Das Atomgewicht des Heliums”. Zeitschrift für anorganische Chemie (în German). 10 (1): 289–292. doi:10.1002/zaac.18950100130.
Kapitza, P. (1938). „Viscosity of Liquid Helium below the λ-Point”. Nature. 141 (3558): 74. doi:10.1038/141074a0.
Osheroff, D. D. (1972). „Evidence for a New Phase of Solid He³”. Phys. Rev. Lett. 28 (14): 885–888. doi:10.1103/PhysRevLett.28.885.
Weiss, Achim. „Elements of the past: Big Bang Nucleosynthesis and observation”. Max Planck Institute for Gravitational Physics. Arhivat din original la 8 februarie 2007. Accesat în 23 iunie 2008. ; Coc, A. (2004). „Updated Big Bang Nucleosynthesis confronted to WMAP observations and to the Abundance of Light Elements”. Astrophysical Journal. 600 (2): 544. doi:10.1086/380121.
Novick, Aaron (1947). „Half-Life of Tritium”. Physical Review. 72 (10): 972–972. doi:10.1103/PhysRev.72.972.2.
Zastenker G. N. (2002). „Isotopic Composition and Abundance of Interstellar Neutral Helium Based on Direct Measurements”. Astrophysics. 45 (2): 131–142. doi:10.1023/A:1016057812964. Accesat în 20 iulie 2008.
Weiss, Ray F. (1971). „Solubility of helium and neon in water and seawater”. J. Chem. Eng. Data. 16 (2): 235–241. doi:10.1021/je60049a019.
Stone, Jack A. (2004). „Using helium as a standard of refractive”. Metrologia. 41 (3): 189–197. doi:10.1088/0026-1394/41/3/012.
Buhler, F. (1976). „Helium isotopes in an aurora”. J. Geophys. Res. 81 (1): 111–115. doi:10.1029/JA081i001p00111.
Malinowska-Adamska, C. (2003). „Dynamic and thermodynamic properties of solid helium in the reduced all-neighbours approximation of the self-consistent phonon theory”. Physica status solidi (b). 240 (1): 55–67. doi:10.1002/pssb.200301871.
Henshaw, D. B. (1958). „Structure of Solid Helium by Neutron Diffraction”. Physical Review Letters. 109 (2): 328–330. doi:10.1103/PhysRev.109.328.
Hohenberg, P. C. (2000). „Microscopic Theory of Superfluid Helium”. Annals of Physics. 281 (1–2): 636–705 12091211. doi:10.1006/aphy.2000.6019.
Fairbank, H. A. (1949). „Rollin Film Rates în Liquid Helium”. Physical Review. 76 (8): 1209–1211. doi:10.1103/PhysRev.76.1209.
Rollin, B. V. (1939). „On the "film" phenomenon of liquid helium II”. Physica. 6 (2): 219–230. doi:10.1016/S0031-8914(39)80013-1.
Bergman, D. (1949). „Hydrodynamics and Third Sound in Thin He II Films”. Physical Review. 188 (1): 370–384. doi:10.1103/PhysRev.188.370.
Hiby, Julius W. (1939). „Massenspektrographische Untersuchungen an Wasserstoff- und Heliumkanalstrahlen (H+
3, H−
2, HeH+
, HeD+
, He−
)”. Annalen der Physik. 426 (5): 473–487. doi:10.1002/andp.19394260506.
Ming Wah Wong (2000). „Prediction of a Metastable Helium Compound: HHeF”. Journal of the American Chemical Society. 122 (26): 6289–6290. doi:10.1021/ja9938175.
Saunders, Martin Hugo (1993). „Stable Compounds of Helium and Neon: He@C₆₀ and Ne@C₆₀”. Science. 259 (5100): 1428–1430. doi:10.1126/science.259.5100.1428. PMID 17801275.
Saunders, M. (1994). „Probing the interior of fullerenes by ³He NMR spectroscopy of endohedral ³He@C₆₀ and ³He@C₇₀”. Nature. 367 (6460): 256–258. doi:10.1038/367256a0.
Oliver, B. M. (1984). „Helium concentration în the Earth's lower atmosphere”. Geochimica et Cosmochimica Acta. 48 (9): 1759–1767. doi:10.1016/0016-7037(84)90030-9.
Lie-Svendsen, Ø. (1996). „Helium escape from the terrestrial atmosphere: The ion outflow mechanism”. Journal of Geophysical Research. 101 (A2): 2435–2444. doi:10.1029/95JA02208.
Zartman, R. E.; Wasserburg, G. J.; Reynolds, J. H. (1961). „Helium Argon and Carbon în Natural Gases”. Journal of Geophysical Research. 66 (1): 277–306. doi:10.1029/JZ066i001p00277. Accesat în 21 iulie 2008.
McFarland, D. F. (1903). „Composition of Gas from a Well at Dexter, Kan”. Transactions of the Kansas Academy of Science. 19: 60–62. doi:10.2307/3624173. JSTOR 3624173.
Cady, H.P. (1906). „Helium in Natural Gas”. Science. 24 (611): 344. doi:10.1126/science.24.611.344. PMID 17772798.
Cady, H.P. (1906). „Helium in Kansas Natural Gas”. Transactions of the Kansas Academy of Science. 20: 80–81. doi:10.2307/3624645. JSTOR 3624645.
Smith, E.M. (2003). „Challenges to the Worldwide Supply of Helium in the Next Decade” (PDF). Advances in Cryogenic Engineering. 49 A (710): 119–138. doi:10.1063/1.1774674. Arhivat din original (PDF) la 25 iunie 2008. Accesat în 20 iulie 2008.
Kaplan, Karen H. (iunie 2007). „Helium shortage hampers research and industry”. Physics Today. 60 (6). American Institute of Physics. pp. 31–32. doi:10.1063/1.2754594. Arhivat din original la 4 decembrie 2008. Accesat în 20 iulie 2008.
Belyakov, V.P.; S. G. Durgar'yan; et al. (1981). „Membrane technology — A new trend în industrial gas separation”. Chemical and Petroleum Engineering. 17 (1): 19–21. doi:10.1007/BF01245721.
Dee, P. I. (1933). „A Photographic Investigation of the Transmutation of Lithium and Boron by Protons and of Lithium by Ions of the Heavy Isotope of Hydrogen”. Proceedings of the Royal Society of London. 141 (845): 733–742. doi:10.1098/rspa.1933.0151.
Butcher, Scott J. (2007). „Impaired exercise ventilatory mechanics with the self-contained breathing apparatus are improved with heliox”. European Journal of Applied Physiology. Netherlands: Springer. 101 (6): 659–69. doi:10.1007/s00421-007-0541-5. PMID 17701048.
Beckwith, I.E. (1990). „Aerothermodynamics and Transition în High-Speed Wind Tunnels at Nasa Langley”. Annual Review of Fluid Mechanics. 22: 419–439. doi:10.1146/annurev.fl.22.010190.002223.
Belcher, James R. (1999). „Working gases în thermoacoustic engines”. The Journal of the Acoustical Society of America. 105 (5): 2677–2684. doi:10.1121/1.426884. PMID 10335618.
Jakobsson, H. (1997). „Simulations of the dynamics of the Large Earth-based Solar Telescope”. Astronomical & Astrophysical Transactions. 13 (1): 35–46. doi:10.1080/10556799708208113.
Engvold, O. (1983). „Tests of vacuum VS helium în a solar telescope”. Applied Optics. 22 (1): 10–12. Bibcode:1983ApOpt..22...10E. doi:10.1364/AO.22.000010. PMID 20401118.
de Grassberger, Martin (2007). „Suicidal asphyxiation with helium: Report of three cases Suizid mit Helium Gas: Bericht über drei Fälle”. Wiener Klinische Wochenschrift (în German & English). 119 (9–10): 323–325. doi:10.1007/s00508-007-0785-4. PMID 17571238.

einstein-online.info (Global: low place; Romanian: low place)

Weiss, Achim. „Elements of the past: Big Bang Nucleosynthesis and observation”. Max Planck Institute for Gravitational Physics. Arhivat din original la 8 februarie 2007. Accesat în 23 iunie 2008. ; Coc, A. (2004). „Updated Big Bang Nucleosynthesis confronted to WMAP observations and to the Abundance of Light Elements”. Astrophysical Journal. 600 (2): 544. doi:10.1086/380121.

ele.ro (Global: low place; Romanian: 1,852^nd place)

sanatate.ele.ro

Heliul și vocea amuzantă Arhivat în 1 ianuarie 2010, la Wayback Machine.. sanatate.ele.ro. Accesat la 10 februarie 2010.

google.co.jp (Global: 934^th place; Romanian: 1,560^th place)

books.google.co.jp

Tehnici experimentale pentru măsurători de temperatură scăzută. Oxford University Press. ISBN 0198570546. Parametru necunoscut |ani= ignorat (ajutor); Parametru necunoscut |. Autor= ignorat (ajutor)

gpo.gov (Global: 1,360^th place; Romanian: 2,407^th place)

edocket.access.gpo.gov

„Conservation Helium Sale” (PDF). Federal Register. 70 (193): 58464. 6 octombrie 2005. Accesat în 20 iulie 2008.

harvard.edu (Global: 18^th place; Romanian: 27^th place)

adsabs.harvard.edu

Kochhar, R. K. (1991). „French astronomers in India during the 17th - 19th centuries”. Journal of the British Astronomical Association. 101 (2): 95–100. Bibcode:1991JBAA..101...95K.
Engvold, O. (1983). „Tests of vacuum VS helium în a solar telescope”. Applied Optics. 22 (1): 10–12. Bibcode:1983ApOpt..22...10E. doi:10.1364/AO.22.000010. PMID 20401118.

ingentaconnect.com (Global: 3,306^th place; Romanian: 1,460^th place)

Zastenker G. N. (2002). „Isotopic Composition and Abundance of Interstellar Neutral Helium Based on Direct Measurements”. Astrophysics. 45 (2): 131–142. doi:10.1023/A:1016057812964. Accesat în 20 iulie 2008.

jstor.org (Global: 26^th place; Romanian: 69^th place)

McFarland, D. F. (1903). „Composition of Gas from a Well at Dexter, Kan”. Transactions of the Kansas Academy of Science. 19: 60–62. doi:10.2307/3624173. JSTOR 3624173.
Cady, H.P. (1906). „Helium in Kansas Natural Gas”. Transactions of the Kansas Academy of Science. 20: 80–81. doi:10.2307/3624645. JSTOR 3624645.
Williamson, John G. (1968). „Energy for Kansas”. Transactions of the Kansas Academy of Science. Kansas Academy of Science. 71 (4): 432–438. JSTOR 3627447.

leidenuniv.nl (Global: 4,798^th place; Romanian: 1,280^th place)

www-lorentz.leidenuniv.nl

van Delft, Dirk (2008). „Little cup of Helium, big Science” (PDF). Physics today: 36–42. Arhivat din original (PDF) la 25 iunie 2008. Accesat în 20 iulie 2008.

mantleplumes.org (Global: low place; Romanian: low place)

Anderson, Don L. (2 septembrie 2006). „Helium Fundamentals”. MantlePlumes.org. Accesat în 20 iulie 2008.

nap.edu (Global: 2,128^th place; Romanian: 1,545^th place)

„Executive Summary”. nap.edu. Accesat în 20 iulie 2008.

nasa.gov (Global: 75^th place; Romanian: 56^th place)

cryowwwebber.gsfc.nasa.gov

Warner, Brent. „Introduction to Liquid Helium”. NASA. Arhivat din original la 1 septembrie 2005. Accesat în 5 ianuarie 2007.

hq.nasa.gov

Emme, Eugene M. comp., ed. (1961). „Aeronautics and Astronautics Chronology, 1920–1924”. Aeronautics and Astronautics: An American Chronology of Science and Technology in the Exploration of Space, 1915–1960. Washington, D.C.: NASA. pp. 11–19. Arhivat din original la 14 iulie 2019. Accesat în 20 iulie 2008.

nih.gov (Global: 4^th place; Romanian: 4^th place)

ncbi.nlm.nih.gov

Saunders, Martin Hugo (1993). „Stable Compounds of Helium and Neon: He@C₆₀ and Ne@C₆₀”. Science. 259 (5100): 1428–1430. doi:10.1126/science.259.5100.1428. PMID 17801275.
Cady, H.P. (1906). „Helium in Natural Gas”. Science. 24 (611): 344. doi:10.1126/science.24.611.344. PMID 17772798.
Fowler, B (1985). „Effects of inert gas narcosis on behavior—a critical review”. Undersea Biomedical Research Journal. 12 (4): 369–402. PMID 4082343. Arhivat din original la 25 decembrie 2010. Accesat în 27 iunie 2008.
Thomas, J. R. (1976). „Reversal of nitrogen narcosis în rats by helium pressure”. Undersea Biomed Res. 3 (3): 249–59. PMID 969027. Arhivat din original la 6 decembrie 2008. Accesat în 6 august 2008.
Rostain, J. C. (1988). „Effects of a H₂-He-O₂ mixture on the HPNS up to 450 msw”. Undersea Biomed. Res. 15 (4): 257–70. OCLC 2068005. PMID 3212843. Arhivat din original la 6 decembrie 2008. Accesat în 24 iunie 2008.
Butcher, Scott J. (2007). „Impaired exercise ventilatory mechanics with the self-contained breathing apparatus are improved with heliox”. European Journal of Applied Physiology. Netherlands: Springer. 101 (6): 659–69. doi:10.1007/s00421-007-0541-5. PMID 17701048.
Belcher, James R. (1999). „Working gases în thermoacoustic engines”. The Journal of the Acoustical Society of America. 105 (5): 2677–2684. doi:10.1121/1.426884. PMID 10335618.
Engvold, O. (1983). „Tests of vacuum VS helium în a solar telescope”. Applied Optics. 22 (1): 10–12. Bibcode:1983ApOpt..22...10E. doi:10.1364/AO.22.000010. PMID 20401118.
Ackerman MJ, Maitland G (1975). „Calculation of the relative speed of sound in a gas mixture”. Undersea Biomed Res. 2 (4): 305–10. PMID 1226588. Arhivat din original la 27 ianuarie 2011. Accesat în 9 august 2008.
de Grassberger, Martin (2007). „Suicidal asphyxiation with helium: Report of three cases Suizid mit Helium Gas: Bericht über drei Fälle”. Wiener Klinische Wochenschrift (în German & English). 119 (9–10): 323–325. doi:10.1007/s00508-007-0785-4. PMID 17571238.
Rostain JC, Lemaire C, Gardette-Chauffour MC, Doucet J, Naquet R (1983). „Estimation of human susceptibility to the high-pressure nervous syndrome”. J Appl Physiol. 54 (4): 1063–70. PMID 6853282. Arhivat din original la 28 iunie 2012. Accesat în 9 august 2008.
Hunger Jr, W. L. (1974). „The causes, mechanisms and prevention of the high pressure nervous syndrome”. Undersea Biomed. Res. 1 (1): 1–28. OCLC 2068005. PMID 4619860. Arhivat din original la 25 decembrie 2010. Accesat în 9 august 2008.

nmt.edu (Global: low place; Romanian: low place)

geoinfo.nmt.edu

Broadhead, Ronald F. (2005). „Helium în New Mexico – geology distribution resource demand and exploration possibilities” (PDF). New Mexico Geology. 27 (4): 93–101. Arhivat din original (PDF) la 31 octombrie 2008. Accesat în 21 iulie 2008.

oed.com (Global: 360^th place; Romanian: 751^st place)

dictionary.oed.com

„Helium”. Oxford English Dictionary. 2008. Accesat în 20 iulie 2008.

physiology.org (Global: 5,293^rd place; Romanian: 9,759^th place)

jap.physiology.org

Rostain JC, Lemaire C, Gardette-Chauffour MC, Doucet J, Naquet R (1983). „Estimation of human susceptibility to the high-pressure nervous syndrome”. J Appl Physiol. 54 (4): 1063–70. PMID 6853282. Arhivat din original la 28 iunie 2012. Accesat în 9 august 2008.

rubicon-foundation.org (Global: low place; Romanian: 4,226^th place)

archive.rubicon-foundation.org

Fowler, B (1985). „Effects of inert gas narcosis on behavior—a critical review”. Undersea Biomedical Research Journal. 12 (4): 369–402. PMID 4082343. Arhivat din original la 25 decembrie 2010. Accesat în 27 iunie 2008.
Thomas, J. R. (1976). „Reversal of nitrogen narcosis în rats by helium pressure”. Undersea Biomed Res. 3 (3): 249–59. PMID 969027. Arhivat din original la 6 decembrie 2008. Accesat în 6 august 2008.
Rostain, J. C. (1988). „Effects of a H₂-He-O₂ mixture on the HPNS up to 450 msw”. Undersea Biomed. Res. 15 (4): 257–70. OCLC 2068005. PMID 3212843. Arhivat din original la 6 decembrie 2008. Accesat în 24 iunie 2008.
Ackerman MJ, Maitland G (1975). „Calculation of the relative speed of sound in a gas mixture”. Undersea Biomed Res. 2 (4): 305–10. PMID 1226588. Arhivat din original la 27 ianuarie 2011. Accesat în 9 august 2008.
Hunger Jr, W. L. (1974). „The causes, mechanisms and prevention of the high pressure nervous syndrome”. Undersea Biomed. Res. 1 (1): 1–28. OCLC 2068005. PMID 4619860. Arhivat din original la 25 decembrie 2010. Accesat în 9 august 2008.

sciamdigital.com (Global: low place; Romanian: low place)

Basu, Sourish (octombrie 2007). Yam, Philip, ed. „Updates: Into Thin Air”. Scientific American. 297 (4). Scientific American, Inc. p. 18. Accesat în 4 august 2008.

sciencedaily.com (Global: 993^rd place; Romanian: 520^th place)

„Helium Supplies Endangered, Threatening Science And Technology?”. Science Daily. 2008. Accesat în 26 august 2009.
Helium Supplies Endangered, Threatening Science And Technology. Science Daily. Accesat la 10 februarie 2010.

scuba-doc.com (Global: low place; Romanian: low place)

Campbell, Ernest S. (13 mai 2008). „High Pressure Nervous Syndrome”. Physics and Problems With Gases. Arhivat din original la 5 iulie 2008. Accesat în 16 iulie 2008.

sjsu.edu (Global: 6,511^th place; Romanian: 7,779^th place)

The Old Quantum Physics of Neils Bohr and the Spectrum of Helium: A Modified Version of the Bohr Model Arhivat în 26 mai 2009, la Wayback Machine.. sjsu.edu. Accesat la 11 februarie 2009.

slate.com (Global: 259^th place; Romanian: 418^th place)

Engber, Daniel (13 iunie 2006). „Stay Out of That Balloon!”. Slate.com. Accesat în 14 iulie 2008.

stanford.edu (Global: 179^th place; Romanian: 36^th place)

thermosciences.stanford.edu

Morris, C.I. (2001). Shock Induced Combustion în High Speed Wedge Flows (PDF). Stanford University Thesis. Arhivat din original (PDF) la 4 martie 2009. Accesat în 27 octombrie 2009.

thespacereview.com (Global: 9,535^th place; Romanian: 8,570^th place)

Hedman, Eric R. (16 ianuarie 2006). „A fascinating hour with Gerald Kulcinski”. The Space Review. Accesat în 20 iulie 2008.

time.com (Global: 61^st place; Romanian: 120^th place)

„Coldest Cold”. Time Inc. 10 iunie 1929. Arhivat din original la 21 iulie 2013. Accesat în 27 iulie 2008.

ualberta.ca (Global: 3,600^th place; Romanian: 9,927^th place)

phys.ualberta.ca

„Solid Helium”. Department of Physics University of Alberta. 5 octombrie 2005. Arhivat din original la 31 mai 2008. Accesat în 20 iulie 2008.

usgs.gov (Global: 167^th place; Romanian: 156^th place)

minerals.usgs.gov

„Helium End User Statistic” (PDF). U.S. Geological Survey. Arhivat din original (PDF) la 21 septembrie 2008. Accesat în 20 iulie 2008.
„Helium” (PDF). Mineral Commodity Summaries. U.S. Geological Survey. 2004. pp. 78–79. Arhivat din original (PDF) la 10 ianuarie 2019. Accesat în 14 iulie 2008.

usra.edu (Global: 2,838^th place; Romanian: 1,775^th place)

lpi.usra.edu

Slyuta, E. N. (2007). „The estimation of helium-3 probable reserves în lunar regolith” (PDF). Lunar and Planetary Science XXXVIII. Accesat în 20 iulie 2008.

uw.edu.pl (Global: 3,918^th place; Romanian: 4,967^th place)

„Collapse of helium's chemical nobility predicted by Polish chemist” (PDF). Arhivat din original (PDF) la 19 martie 2009. Accesat în 15 mai 2009.

weather.gov (Global: 1,128^th place; Romanian: 8,581^st place)

srh.weather.gov

„The Atmosphere: Introduction”. JetStream - Online School for Weather. National Weather Service. 29 august 2007. Arhivat din original la 13 ianuarie 2008. Accesat în 12 iulie 2008.

web.archive.org (Global: 1^st place; Romanian: 1^st place)

Sir Norman Lockyer - discovery of the element that he named helium Arhivat în 21 septembrie 2009, la Wayback Machine." Balloon Professional Magazine, 07 Aug 2009.
van Delft, Dirk (2008). „Little cup of Helium, big Science” (PDF). Physics today: 36–42. Arhivat din original (PDF) la 25 iunie 2008. Accesat în 20 iulie 2008.
„Coldest Cold”. Time Inc. 10 iunie 1929. Arhivat din original la 21 iulie 2013. Accesat în 27 iulie 2008.
The Old Quantum Physics of Neils Bohr and the Spectrum of Helium: A Modified Version of the Bohr Model Arhivat în 26 mai 2009, la Wayback Machine.. sjsu.edu. Accesat la 11 februarie 2009.
Weiss, Achim. „Elements of the past: Big Bang Nucleosynthesis and observation”. Max Planck Institute for Gravitational Physics. Arhivat din original la 8 februarie 2007. Accesat în 23 iunie 2008. ; Coc, A. (2004). „Updated Big Bang Nucleosynthesis confronted to WMAP observations and to the Abundance of Light Elements”. Astrophysical Journal. 600 (2): 544. doi:10.1086/380121.
„Lunar Mining of Helium-3”. Fusion Technology Institute of the University of Wisconsin-Madison. 19 octombrie 2007. Arhivat din original la 4 septembrie 2006. Accesat în 9 iulie 2008.
„Solid Helium”. Department of Physics University of Alberta. 5 octombrie 2005. Arhivat din original la 31 mai 2008. Accesat în 20 iulie 2008.
Warner, Brent. „Introduction to Liquid Helium”. NASA. Arhivat din original la 1 septembrie 2005. Accesat în 5 ianuarie 2007.
„Collapse of helium's chemical nobility predicted by Polish chemist” (PDF). Arhivat din original (PDF) la 19 martie 2009. Accesat în 15 mai 2009.
„The Atmosphere: Introduction”. JetStream - Online School for Weather. National Weather Service. 29 august 2007. Arhivat din original la 13 ianuarie 2008. Accesat în 12 iulie 2008.
Broadhead, Ronald F. (2005). „Helium în New Mexico – geology distribution resource demand and exploration possibilities” (PDF). New Mexico Geology. 27 (4): 93–101. Arhivat din original (PDF) la 31 octombrie 2008. Accesat în 21 iulie 2008.
„The Discovery of Helium in Natural Gas”. American Chemical Society. 2004. Arhivat din original la 20 mai 2006. Accesat în 20 iulie 2008.
Emme, Eugene M. comp., ed. (1961). „Aeronautics and Astronautics Chronology, 1920–1924”. Aeronautics and Astronautics: An American Chronology of Science and Technology in the Exploration of Space, 1915–1960. Washington, D.C.: NASA. pp. 11–19. Arhivat din original la 14 iulie 2019. Accesat în 20 iulie 2008.
„Helium End User Statistic” (PDF). U.S. Geological Survey. Arhivat din original (PDF) la 21 septembrie 2008. Accesat în 20 iulie 2008.
Smith, E.M. (2003). „Challenges to the Worldwide Supply of Helium in the Next Decade” (PDF). Advances in Cryogenic Engineering. 49 A (710): 119–138. doi:10.1063/1.1774674. Arhivat din original (PDF) la 25 iunie 2008. Accesat în 20 iulie 2008.
Kaplan, Karen H. (iunie 2007). „Helium shortage hampers research and industry”. Physics Today. 60 (6). American Institute of Physics. pp. 31–32. doi:10.1063/1.2754594. Arhivat din original la 4 decembrie 2008. Accesat în 20 iulie 2008.
Z. Cai (2007). Modelling Helium Markets (PDF). University of Cambridge. Arhivat din original (PDF) la 26 martie 2009. Accesat în 14 iulie 2008.
„Helium” (PDF). Mineral Commodity Summaries. U.S. Geological Survey. 2004. pp. 78–79. Arhivat din original (PDF) la 10 ianuarie 2019. Accesat în 14 iulie 2008.
Fowler, B (1985). „Effects of inert gas narcosis on behavior—a critical review”. Undersea Biomedical Research Journal. 12 (4): 369–402. PMID 4082343. Arhivat din original la 25 decembrie 2010. Accesat în 27 iunie 2008.
Thomas, J. R. (1976). „Reversal of nitrogen narcosis în rats by helium pressure”. Undersea Biomed Res. 3 (3): 249–59. PMID 969027. Arhivat din original la 6 decembrie 2008. Accesat în 6 august 2008.
Rostain, J. C. (1988). „Effects of a H₂-He-O₂ mixture on the HPNS up to 450 msw”. Undersea Biomed. Res. 15 (4): 257–70. OCLC 2068005. PMID 3212843. Arhivat din original la 6 decembrie 2008. Accesat în 24 iunie 2008.
Morris, C.I. (2001). Shock Induced Combustion în High Speed Wedge Flows (PDF). Stanford University Thesis. Arhivat din original (PDF) la 4 martie 2009. Accesat în 27 octombrie 2009.
„CERN - LHC: Facts and Figures” (PDF). CERN. Arhivat din original (PDF) la 6 iulie 2011. Accesat în 30 aprilie 2008.
Ackerman MJ, Maitland G (1975). „Calculation of the relative speed of sound in a gas mixture”. Undersea Biomed Res. 2 (4): 305–10. PMID 1226588. Arhivat din original la 27 ianuarie 2011. Accesat în 9 august 2008.
Heliul și vocea amuzantă Arhivat în 1 ianuarie 2010, la Wayback Machine.. sanatate.ele.ro. Accesat la 10 februarie 2010.
Campbell, Ernest S. (13 mai 2008). „High Pressure Nervous Syndrome”. Physics and Problems With Gases. Arhivat din original la 5 iulie 2008. Accesat în 16 iulie 2008.
Hunger Jr, W. L. (1974). „The causes, mechanisms and prevention of the high pressure nervous syndrome”. Undersea Biomed. Res. 1 (1): 1–28. OCLC 2068005. PMID 4619860. Arhivat din original la 25 decembrie 2010. Accesat în 9 august 2008.

webelements.com (Global: 3,527^th place; Romanian: 2,105^th place)

Winter, Mark (2008). „Helium: the essentials”. University of Sheffield. Accesat în 14 iulie 2008.

wired.com (Global: 193^rd place; Romanian: 484^th place)

Jenkins, Emily (2000). „A Helium Shortage?”. Wired. Accesat în 26 august 2009.

wisc.edu (Global: 1,045^th place; Romanian: 833^rd place)

fti.neep.wisc.edu

„Lunar Mining of Helium-3”. Fusion Technology Institute of the University of Wisconsin-Madison. 19 octombrie 2007. Arhivat din original la 4 septembrie 2006. Accesat în 9 iulie 2008.

digicoll.library.wisc.edu

Mullins, P.V. (1951). Helium. Bureau of Mines / Minerals yearbook 1949. pp. 599–602. Accesat în 20 iulie 2008.

worldcat.org (Global: 5^th place; Romanian: 11^th place)

Ramsay, William (1895). „On a Gas Showing the Spectrum of Helium, the Reputed Cause of D3 , One of the Lines in the Coronal Spectrum. Preliminary Note”. Proceedings of the Royal Society of London. 58: 65–67. doi:10.1098/rspl.1895.0006. ISSN 0370-1662.
Rostain, J. C. (1988). „Effects of a H₂-He-O₂ mixture on the HPNS up to 450 msw”. Undersea Biomed. Res. 15 (4): 257–70. OCLC 2068005. PMID 3212843. Arhivat din original la 6 decembrie 2008. Accesat în 24 iunie 2008.
Hunger Jr, W. L. (1974). „The causes, mechanisms and prevention of the high pressure nervous syndrome”. Undersea Biomed. Res. 1 (1): 1–28. OCLC 2068005. PMID 4619860. Arhivat din original la 25 decembrie 2010. Accesat în 9 august 2008.

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