Stea (Romanian Wikipedia)

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

Last modified: 12:51:44, 28 August 2026 (UTC)

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7260adsabs.harvard.edu

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Davis, Kate (1 decembrie 2000). „Variable Star of the Month – December, 2000: Alpha Orionis”. AAVSO. Arhivat din original la 12 iulie 2006. Accesat în 13 august 2006.

adsabs.harvard.edu (Global: 14^th place; Romanian: 29^th place)

Iben, Icko Jr. (1991). „Single and binary star evolution”. Astrophysical Journal Supplement Series. 76: 55–114. Bibcode:1991ApJS...76...55I. doi:10.1086/191565. ISSN 0067-0049.
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Murdin, P. (2000). „Aristillus (c. 200 BC)”. Encyclopedia of Astronomy and Astrophysics. Bibcode:2000eaa..bookE3440.. doi:10.1888/0333750888/3440. ISBN 978-0-333-75088-9.
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Zhao, Fu-Yuan; Strom, R. G.; Jiang, Shi-Yang (2006). „The Guest Star of AD185 Must Have Been a Supernova”. Chinese Journal of Astronomy and Astrophysics. 6 (5): 635–640. Bibcode:2006ChJAA...6..635Z. doi:10.1088/1009-9271/6/5/17.
Duyvendak, J. J. L. (aprilie 1942). „Further Data Bearing on the Identification of the Crab Nebula with the Supernova of 1054 A.D. Part I. The Ancient Oriental Chronicles”. Publications of the Astronomical Society of the Pacific. 54 (318): 91–94. Bibcode:1942PASP...54...91D. doi:10.1086/125409.
Mayall, N. U.; Oort, Jan Hendrik (aprilie 1942). „Further Data Bearing on the Identification of the Crab Nebula with the Supernova of 1054 A.D. Part II. The Astronomical Aspects”. Publications of the Astronomical Society of the Pacific. 54 (318): 95–104. Bibcode:1942PASP...54...95M. doi:10.1086/125410.
Brecher, K.; et al. (1983). „Ancient records and the Crab Nebula supernova”. The Observatory. 103: 106–113. Bibcode:1983Obs...103..106B.
Ahmad, I. A. (1995). „The impact of the Qur'anic conception of astronomical phenomena on Islamic civilization”. Vistas in Astronomy. 39 (4): 395–403 [402]. Bibcode:1995VA.....39..395A. doi:10.1016/0083-6656(95)00033-X.
Hoskin, Michael (1998). „The Value of Archives in Writing the History of Astronomy”. Library and Information Services in Astronomy III. 153: 207. Bibcode:1998ASPC..153..207H. Accesat în 24 august 2006.
Proctor, Richard A. (1870). „Are any of the nebulæ star-systems?”. Nature. 1 (13): 331–333. Bibcode:1870Natur...1..331P. doi:10.1038/001331a0 .
Michelson, A. A.; Pease, F. G. (1921). „Measurement of the diameter of Alpha Orionis with the interferometer”. Astrophysical Journal. 53 (5): 249–259. Bibcode:1921ApJ....53..249M. doi:10.1086/142603.
e.g. Battinelli, Paolo; Demers, Serge; Letarte, Bruno (2003). „Carbon Star Survey in the Local Group. V. The Outer Disk of M31”. The Astronomical Journal. 125 (3): 1298–1308. Bibcode:2003AJ....125.1298B. doi:10.1086/346274 .
Kelly, Patrick L.; et al. (2 aprilie 2018). „Extreme magnification of an individual star at redshift 1.5 by a galaxy-cluster lens”. Nature. 2 (4): 334–342. arXiv:1706.10279 . Bibcode:2018NatAs...2..334K. doi:10.1038/s41550-018-0430-3.
Hashimoto, Takuya; Laporte, Nicolas; Mawatari, Ken; Ellis, Richard S.; Inoue, Akio K.; Zackrisson, Erik; Roberts-Borsani, Guido; Zheng, Wei; Tamura, Yoichi; Bauer, Franz E.; Fletcher, Thomas; Harikane, Yuichi; Hatsukade, Bunyo; Hayatsu, Natsuki H.; Matsuda, Yuichi; Matsuo, Hiroshi; Okamoto, Takashi; Ouchi, Masami; Pelló, Roser; Rydberg, Claes-Erik; Shimizu, Ikkoh; Taniguchi, Yoshiaki; Umehata, Hideki; Yoshida, Naoki (mai 2018). „The onset of star formation 250 million years after Big Bang” (PDF). Nature. 557 (7705): 392–395. arXiv:1805.05966 . Bibcode:2018Natur.557..392H. doi:10.1038/s41586-018-0117-z. PMID 29769675.
Prsa, A.; Harmanec, P.; Torres, G.; Mamajek, E.; et al. (2016). „Nominal values for selected solar and planetary quantities: IAU 2015 Resolution B3”. Astronomical Journal. 152 (2): 41. arXiv:1605.09788 . Bibcode:2016AJ....152...41P. doi:10.3847/0004-6256/152/2/41.
Woodward, P. R. (1978). „Theoretical models of star formation”. Annual Review of Astronomy and Astrophysics. 16 (1): 555–584. Bibcode:1978ARA&A..16..555W. doi:10.1146/annurev.aa.16.090178.003011.
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Adams, Fred C.; Laughlin, Gregory; Graves, Genevieve J.M. „Red Dwarfs and the End of the Main Sequence” (PDF). Gravitational Collapse: From Massive Stars to Planets. Revista Mexicana de Astronomía y Astrofísica. pp. 46–49. Bibcode:2004RMxAC..22...46A. Arhivat din original (PDF) la 11 iulie 2019. Accesat în 24 iunie 2008.
Elmegreen, B. G.; Lada, C. J. (1977). „Sequential formation of subgroups in OB associations”. Astrophysical Journal, Part 1. 214: 725–741. Bibcode:1977ApJ...214..725E. doi:10.1086/155302.
Getman, K. V.; et al. (2012). „The Elephant Trunk Nebula and the Trumpler 37 cluster: contribution of triggered star formation to the total population of an H II region”. Monthly Notices of the Royal Astronomical Society. 426 (4): 2917–2943. arXiv:1208.1471 . Bibcode:2012MNRAS.426.2917G. doi:10.1111/j.1365-2966.2012.21879.x.
Bally, J.; Morse, J.; Reipurth, B. (1996). „The Birth of Stars: Herbig-Haro Jets, Accretion and Proto-Planetary Disks”. În Benvenuti, Piero; Macchetto, F.D.; Schreier, Ethan J. Science with the Hubble Space Telescope – II. Proceedings of a workshop held in Paris, France, December 4–8, 1995. Space Telescope Science Institute. p. 491. Bibcode:1996swhs.conf..491B.
Duquennoy, A.; Mayor, M. (1991). „Multiplicity among solar-type stars in the solar neighbourhood. II – Distribution of the orbital elements in an unbiased sample”. Astronomy & Astrophysics. 248 (2): 485–524. Bibcode:1991A&A...248..485D.
J. G. Mengel; P. Demarque; A. V.Sweigart; P. G. Gross (1979). „Stellar evolution from the zero-age main sequence”. Astrophysical Journal Supplement Series. 40: 733–791.
Mengel, J. G.; et al. (1979). „Stellar evolution from the zero-age main sequence”. Astrophysical Journal Supplement Series. 40: 733–791. Bibcode:1979ApJS...40..733M. doi:10.1086/190603.
Sackmann, I. J.; Boothroyd, A. I.; Kraemer, K. E. (1993). „Our Sun. III. Present and Future”. Astrophysical Journal. 418: 457. Bibcode:1993ApJ...418..457S. doi:10.1086/173407.
Wood, B. E.; et al. (2002). „Measured Mass-Loss Rates of Solar-like Stars as a Function of Age and Activity”. The Astrophysical Journal. 574 (1): 412–425. arXiv:astro-ph/0203437 . Bibcode:2002ApJ...574..412W. doi:10.1086/340797.
de Loore, C.; de Greve, J. P.; Lamers, H. J. G. L. M. (1977). „Evolution of massive stars with mass loss by stellar wind”. Astronomy and Astrophysics. 61 (2): 251–259. Bibcode:1977A&A....61..251D.
Pizzolato, N.; et al. (2001). „Subphotospheric convection and magnetic activity dependence on metallicity and age: Models and tests”. Astronomy & Astrophysics. 373 (2): 597–607. Bibcode:2001A&A...373..597P. doi:10.1051/0004-6361:20010626 .
Schröder, K.-P.; Smith, Robert Connon (2008). „Distant future of the Sun and Earth revisited”. Monthly Notices of the Royal Astronomical Society. 386 (1): 155–163. arXiv:0801.4031 . Bibcode:2008MNRAS.386..155S. doi:10.1111/j.1365-2966.2008.13022.x. See also Palmer, Jason (22 februarie 2008). „Hope dims that Earth will survive Sun's death”. NewScientist.com news service. Accesat în 24 martie 2008.
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Fryer, C.L. „Mass Limits For Black Hole Formation”. Astrophysical Journal. 522 (1): 413–418. Bibcode:1999ApJ...522..413F. doi:10.1086/307647.
Van Dokkum, Pieter G; Conroy, Charlie (2010). „A substantial population of low-mass stars in luminous elliptical galaxies”. Nature. 468 (7326): 940–2. arXiv:1009.5992 . Bibcode:2010Natur.468..940V. doi:10.1038/nature09578. PMID 21124316.
Holmberg, J.; Flynn, C. (2000). „The local density of matter mapped by Hipparcos”. Monthly Notices of the Royal Astronomical Society. 313 (2): 209–216. arXiv:astro-ph/9812404 . Bibcode:2000MNRAS.313..209H. doi:10.1046/j.1365-8711.2000.02905.x.
Lombardi Jr., J. C.; et al. (2002). „Stellar Collisions and the Interior Structure of Blue Stragglers”. The Astrophysical Journal. 568 (2): 939–953. arXiv:astro-ph/0107388 . Bibcode:2002ApJ...568..939L. doi:10.1086/339060.
H. E. Bond; E. P. Nelan; D. A. VandenBerg; G. H. Schaefer; D. Harmer (2013). „HD 140283: A Star in the Solar Neighborhood that Formed Shortly After the Big Bang”. The Astrophysical Journal Letters. 765 (1): L12. arXiv:1302.3180 . Bibcode:2013ApJ...765L..12B. doi:10.1088/2041-8205/765/1/L12.
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Laughlin, G.; Bodenheimer, P.; Adams, F.C. (1997). „The End of the Main Sequence”. The Astrophysical Journal. 482 (1): 420–432. Bibcode:1997ApJ...482..420L. doi:10.1086/304125 .
Irwin, Judith A. (2007). Astrophysics: Decoding the Cosmos. John Wiley and Sons. p. 78. Bibcode:2007adc..book.....I. ISBN 978-0-470-01306-9.
Fischer, D.A.; Valenti, J. (2005). „The Planet-Metallicity Correlation”. The Astrophysical Journal. 622 (2): 1102–1117. Bibcode:2005ApJ...622.1102F. doi:10.1086/428383.
Feltzing, S.; Gonzalez, G. (2000). „The nature of super-metal-rich stars: Detailed abundance analysis of 8 super-metal-rich star candidates” (PDF). Astronomy & Astrophysics. 367 (1): 253–265. Bibcode:2001A&A...367..253F. doi:10.1051/0004-6361:20000477.
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Dolan, Michelle M.; Mathews, Grant J.; Lam, Doan Duc; Lan, Nguyen Quynh; Herczeg, Gregory J.; Dearborn, David S. P. (2017). „Evolutionary Tracks for Betelgeuse”. The Astrophysical Journal. 819 (1): 7. arXiv:1406.3143 . Bibcode:2016ApJ...819....7D. doi:10.3847/0004-637X/819/1/7.
Graham M. Harper; et al. (2008). „A New VLA-HIPPARCOS Distance to Betelgeuse and Its Implications”. The Astronomical Journal. 135 (4): 1430–1440. Bibcode:2008AJ....135.1430H. doi:10.1088/0004-6256/135/4/1430.
Smith, Nathan (1998). „The Behemoth Eta Carinae: A Repeat Offender”. Mercury Magazine. 27 (4): 20. Bibcode:1998Mercu..27d..20S. Arhivat din original la 27 septembrie 2006. Accesat în 13 august 2006.
Weidner, C.; Kroupa, P. (11 februarie 2004). „Evidence for a fundamental stellar upper mass limit from clustered star formation” (PDF). Monthly Notices of the Royal Astronomical Society. 348 (1): 187–191. arXiv:astro-ph/0310860 . Bibcode:2004MNRAS.348..187W. doi:10.1111/j.1365-2966.2004.07340.x.
Hainich, R.; Rühling, U.; Todt, H.; Oskinova, L. M.; Liermann, A.; Gräfener, G.; Foellmi, C.; Schnurr, O.; Hamann, W.-R. (2014). „The Wolf-Rayet stars in the Large Magellanic Cloud”. Astronomy & Astrophysics. 565: A27. arXiv:1401.5474 . Bibcode:2014A&A...565A..27H. doi:10.1051/0004-6361/201322696.
Banerjee, Sambaran; Kroupa, Pavel; Oh, Seungkyung (21 octombrie 2012). „The emergence of super-canonical stars in R136-type starburst clusters”. Monthly Notices of the Royal Astronomical Society. 426 (2): 1416–1426. arXiv:1208.0826 . Bibcode:2012MNRAS.426.1416B. doi:10.1111/j.1365-2966.2012.21672.x.
Sobral, David; Matthee, Jorryt; Darvish, Behnam; Schaerer, Daniel; Mobasher, Bahram; Röttgering, Huub J. A.; Santos, Sérgio; Hemmati, Shoubaneh (4 iunie 2015). „Evidence For POPIII-Like Stellar Populations In The Most Luminous LYMAN-α Emitters At The Epoch Of Re-Ionisation: Spectroscopic Confirmation”. The Astrophysical Journal. 808 (2): 139. arXiv:1504.01734 . Bibcode:2015ApJ...808..139S. doi:10.1088/0004-637x/808/2/139.
Howard, R.; Harvey, J. (1970). „Spectroscopic Determinations of Solar Rotation”. Solar Physics. 12 (1): 23–51. Bibcode:1970SoPh...12...23H. doi:10.1007/BF02276562.
Villata, Massimo (1992). „Angular momentum loss by a stellar wind and rotational velocities of white dwarfs”. Monthly Notices of the Royal Astronomical Society. 257 (3): 450–454. Bibcode:1992MNRAS.257..450V. doi:10.1093/mnras/257.3.450 .
Garnett, D. R.; Kobulnicky, H. A. (2000). „Distance Dependence in the Solar Neighborhood Age-Metallicity Relation”. The Astrophysical Journal. 532 (2): 1192–1196. arXiv:astro-ph/9912031 . Bibcode:2000ApJ...532.1192G. doi:10.1086/308617.
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archive.org (Global: 6^th place; Romanian: 19^th place)

Marov, Mikhail Ya. (2015). „The Structure of the Universe”. The Fundamentals of Modern Astrophysics. pp. 279–294. doi:10.1007/978-1-4614-8730-2_10. ISBN 978-1-4614-8729-6.
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Smith, Michael David (2004). The Origin of Stars. Imperial College Press. pp. 57–68. ISBN 978-1-86094-501-4.
Smith, Michael David (2004). The origin of stars. Imperial College Press. p. 176. ISBN 978-1-86094-501-4.
Duquennoy, A.; Mayor, M. (1991). „Multiplicity among solar-type stars in the solar neighbourhood. II – Distribution of the orbital elements in an unbiased sample”. Astronomy & Astrophysics. 248 (2): 485–524. Bibcode:1991A&A...248..485D.
Sackmann, I. J.; Boothroyd, A. I.; Kraemer, K. E. (1993). „Our Sun. III. Present and Future”. Astrophysical Journal. 418: 457. Bibcode:1993ApJ...418..457S. doi:10.1086/173407.
Wood, B. E.; et al. (2002). „Measured Mass-Loss Rates of Solar-like Stars as a Function of Age and Activity”. The Astrophysical Journal. 574 (1): 412–425. arXiv:astro-ph/0203437 . Bibcode:2002ApJ...574..412W. doi:10.1086/340797.
de Loore, C.; de Greve, J. P.; Lamers, H. J. G. L. M. (1977). „Evolution of massive stars with mass loss by stellar wind”. Astronomy and Astrophysics. 61 (2): 251–259. Bibcode:1977A&A....61..251D.
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Van Dokkum, Pieter G; Conroy, Charlie (2010). „A substantial population of low-mass stars in luminous elliptical galaxies”. Nature. 468 (7326): 940–2. arXiv:1009.5992 . Bibcode:2010Natur.468..940V. doi:10.1038/nature09578. PMID 21124316.
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Lombardi Jr., J. C.; et al. (2002). „Stellar Collisions and the Interior Structure of Blue Stragglers”. The Astrophysical Journal. 568 (2): 939–953. arXiv:astro-ph/0107388 . Bibcode:2002ApJ...568..939L. doi:10.1086/339060.
Laughlin, G.; Bodenheimer, P.; Adams, F.C. (1997). „The End of the Main Sequence”. The Astrophysical Journal. 482 (1): 420–432. Bibcode:1997ApJ...482..420L. doi:10.1086/304125 .
Irwin, Judith A. (2007). Astrophysics: Decoding the Cosmos. John Wiley and Sons. p. 78. Bibcode:2007adc..book.....I. ISBN 978-0-470-01306-9.
Fischer, D.A.; Valenti, J. (2005). „The Planet-Metallicity Correlation”. The Astrophysical Journal. 622 (2): 1102–1117. Bibcode:2005ApJ...622.1102F. doi:10.1086/428383.
Gray, David F. (1992). The Observation and Analysis of Stellar Photospheres. Cambridge University Press. pp. 413–414. ISBN 978-0-521-40868-4.
Graham M. Harper; et al. (2008). „A New VLA-HIPPARCOS Distance to Betelgeuse and Its Implications”. The Astronomical Journal. 135 (4): 1430–1440. Bibcode:2008AJ....135.1430H. doi:10.1088/0004-6256/135/4/1430.
Howard, R.; Harvey, J. (1970). „Spectroscopic Determinations of Solar Rotation”. Solar Physics. 12 (1): 23–51. Bibcode:1970SoPh...12...23H. doi:10.1007/BF02276562.
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adsabs.harvard.edu (Global: 14th place; Romanian: 29th place)

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bbc.co.uk (Global: 11th place; Romanian: 25th place)

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caltech.edu (Global: 240th place; Romanian: 193rd place)

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cseligman.com (Global: 1,720th place; Romanian: 401st place)

csiro.au (Global: 3,457th place; Romanian: 3,460th place)

outreach.atnf.csiro.au

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

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

esa.int (Global: 1,073rd place; Romanian: 636th place)

esa.int

rssd.esa.int

eso.org (Global: 2,825th place; Romanian: 1,902nd place)

gutenberg.org (Global: 629th place; Romanian: 594th place)

hawking.org.uk (Global: low place; Romanian: low place)

hdl.handle.net (Global: 66th place; Romanian: 249th place)

hubblesite.org (Global: 6,472nd place; Romanian: 2,072nd place)

inaf.it (Global: low place; Romanian: low place)

media.inaf.it

lbl.gov (Global: 3,154th place; Romanian: 2,504th place)

aether.lbl.gov

lescienze.it (Global: low place; Romanian: low place)

livingreviews.org (Global: low place; Romanian: 3,646th place)

relativity.livingreviews.org

solarphysics.livingreviews.org

lu.se (Global: 3,613th place; Romanian: 3,694th place)

lup.lub.lu.se

man.ac.uk (Global: low place; Romanian: low place)

jb.man.ac.uk

moses-egypt.net (Global: low place; Romanian: low place)

nasa.gov (Global: 12th place; Romanian: 10th place)

nasa.gov

heasarc.gsfc.nasa.gov

imagine.gsfc.nasa.gov

observe.arc.nasa.gov

nature.com (Global: 207th place; Romanian: 278th place)

newscientist.com (Global: 1,041st place; Romanian: 678th place)

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

nih.gov (Global: 5th place; Romanian: 6th place)

ncbi.nlm.nih.gov

noao.edu (Global: low place; Romanian: 7,237th place)

nobelprize.org (Global: 265th place; Romanian: 178th place)

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

nytimes.com (Global: 7th place; Romanian: 24th place)

oxfordjournals.org (Global: 1,550th place; Romanian: 675th place)

mnras.oxfordjournals.org

psu.edu (Global: 299th place; Romanian: 495th place)

e-education.psu.edu

rit.edu (Global: 8,952nd place; Romanian: 9,092nd place)

spiff.rit.edu

scientificamerican.com (Global: 1,110th place; Romanian: 711th place)

seds.org (Global: 942nd place; Romanian: 319th place)

messier.seds.org

skyandtelescope.com (Global: 9,383rd place; Romanian: 3,198th place)

space.com (Global: 862nd place; Romanian: 493rd place)

springer.com (Global: 182nd place; Romanian: 298th place)

link.springer.com

st-andrews.ac.uk (Global: 1,053rd place; Romanian: 151st place)

www-history.mcs.st-andrews.ac.uk

stanford.edu (Global: 194th place; Romanian: 60th place)

plato.stanford.edu

stsci.edu (Global: 9,235th place; Romanian: 5,092nd place)

swin.edu.au (Global: low place; Romanian: low place)

astronomy.swin.edu.au

aavso.org (Global: 6,468^th place; Romanian: 5,952^nd place)

adsabs.harvard.edu (Global: 14^th place; Romanian: 29^th place)

archive.org (Global: 6^th place; Romanian: 19^th place)

arxiv.org (Global: 49^th place; Romanian: 119^th place)

bbc.co.uk (Global: 11^th place; Romanian: 25^th place)

books.google.com (Global: 3^rd place; Romanian: 8^th place)

caltech.edu (Global: 240^th place; Romanian: 193^rd place)

cbsnews.com (Global: 136^th place; Romanian: 331^st place)

cfa.harvard.edu (Global: 2,284^th place; Romanian: 3,212^th place)

cnn.com (Global: 36^th place; Romanian: 80^th place)

cseligman.com (Global: 1,720^th place; Romanian: 401^st place)

csiro.au (Global: 3,457^th place; Romanian: 3,460^th place)

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

esa.int (Global: 1,073^rd place; Romanian: 636^th place)

eso.org (Global: 2,825^th place; Romanian: 1,902^nd place)

gutenberg.org (Global: 629^th place; Romanian: 594^th place)

hdl.handle.net (Global: 66^th place; Romanian: 249^th place)

hubblesite.org (Global: 6,472^nd place; Romanian: 2,072^nd place)

lbl.gov (Global: 3,154^th place; Romanian: 2,504^th place)

livingreviews.org (Global: low place; Romanian: 3,646^th place)

lu.se (Global: 3,613^th place; Romanian: 3,694^th place)

nasa.gov (Global: 12^th place; Romanian: 10^th place)

nature.com (Global: 207^th place; Romanian: 278^th place)

newscientist.com (Global: 1,041^st place; Romanian: 678^th place)

nih.gov (Global: 5^th place; Romanian: 6^th place)

noao.edu (Global: low place; Romanian: 7,237^th place)

nobelprize.org (Global: 265^th place; Romanian: 178^th place)

nytimes.com (Global: 7^th place; Romanian: 24^th place)

oxfordjournals.org (Global: 1,550^th place; Romanian: 675^th place)

psu.edu (Global: 299^th place; Romanian: 495^th place)

rit.edu (Global: 8,952^nd place; Romanian: 9,092^nd place)

scientificamerican.com (Global: 1,110^th place; Romanian: 711^th place)

seds.org (Global: 942^nd place; Romanian: 319^th place)

skyandtelescope.com (Global: 9,383^rd place; Romanian: 3,198^th place)

space.com (Global: 862^nd place; Romanian: 493^rd place)

springer.com (Global: 182^nd place; Romanian: 298^th place)

st-andrews.ac.uk (Global: 1,053^rd place; Romanian: 151^st place)

stanford.edu (Global: 194^th place; Romanian: 60^th place)

stsci.edu (Global: 9,235^th place; Romanian: 5,092^nd place)

u-strasbg.fr (Global: 163^rd place; Romanian: 53^rd place)

ubc.ca (Global: 1,820^th place; Romanian: 2,451^st place)

uchicago.edu (Global: 226^th place; Romanian: 333^rd place)

ucl.ac.uk (Global: 1,187^th place; Romanian: 1,336^th place)

ucla.edu (Global: 885^th place; Romanian: 892^nd place)

ucsd.edu (Global: 2,146^th place; Romanian: 2,468^th place)

ufl.edu (Global: 880^th place; Romanian: 1,312^th place)

unam.mx (Global: 711^th place; Romanian: 2,406^th place)

universetoday.com (Global: 3,994^th place; Romanian: 1,504^th place)

uoa.gr (Global: 8,455^th place; Romanian: 5,887^th place)

uq.edu.au (Global: 3,996^th place; Romanian: 3,550^th place)

utexas.edu (Global: 868^th place; Romanian: 1,391^st place)

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

webexhibits.org (Global: 8,331^st place; Romanian: 7,746^th place)

wisc.edu (Global: 891^st place; Romanian: 1,035^th place)

worldcat.org (Global: 4^th place; Romanian: 9^th place)