Neptunium (English Wikipedia)

Analysis of information sources in references of the Wikipedia article "Neptunium" in English language version.

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C. R. Hammond (2004). The Elements, in Handbook of Chemistry and Physics (81st ed.). CRC press. ISBN 978-0-8493-0485-9.

archives-ouvertes.fr

hal.archives-ouvertes.fr

Audi, Georges; Bersillon, Olivier; Blachot, Jean; Wapstra, Aaldert Hendrik (2003), "The NUBASE evaluation of nuclear and decay properties", Nuclear Physics A, 729: 3–128, Bibcode:2003NuPhA.729....3A, doi:10.1016/j.nuclphysa.2003.11.001

arxiv.org

Wallner, A.; Faestermann, T.; Feige, J.; Feldstein, C.; Knie, K.; Korschinek, G.; Kutschera, W.; Ofan, A.; Paul, M.; Quinto, F.; Rugel, G.; Steier, P. (2015). "Abundance of live ²⁴⁴Pu in deep-sea reservoirs on Earth points to rarity of actinide nucleosynthesis". Nature Communications. 6: 5956. arXiv:1509.08054. Bibcode:2015NatCo...6.5956W. doi:10.1038/ncomms6956. ISSN 2041-1723. PMC 4309418. PMID 25601158.

bnf.fr

gallica.bnf.fr

Hulubei, H.; Cauchois, Y. (1939). "Nouvelles recherches sur l'élément 93 naturel". Comptes Rendus. 209: 476–479.

books.google.com

Burney, G. A; Harbour, R. M; Subcommittee On Radiochemistry, National Research Council (U.S.); Technical Information Center, U.S. Atomic Energy Commission (1974). Radiochemistry of neptunium.
Nilsson, Karen (1989). The migration chemistry of neptunium. Risø National Laboratory. ISBN 978-87-550-1535-7.
Sharma, B. K. Nuclear and Radiation Chemistry - Transuranium elements. Krishna Prakashan Media. pp. 128–9. ISBN 9788185842639.

chemteam.info

Ida Noddack (1934). "Über das Element 93". Zeitschrift für Angewandte Chemie. 47 (37): 653–655. Bibcode:1934AngCh..47..653N. doi:10.1002/ange.19340473707.

crownedanarchist.com

Otto Hahn (1958). "Discovery of fission". Scientific American. Archived from the original on 2010-12-24.

doi.org

Np(II), (III) and (IV) have been observed, see Dutkiewicz, Michał S.; Apostolidis, Christos; Walter, Olaf; Arnold, Polly L (2017). "Reduction chemistry of neptunium cyclopentadienide complexes: from structure to understanding". Chem. Sci. 8 (4): 2553–2561. doi:10.1039/C7SC00034K. PMC 5431675. PMID 28553487.
Kondev, F. G.; Wang, M.; Huang, W. J.; Naimi, S.; Audi, G. (2021). "The NUBASE2020 evaluation of nuclear properties" (PDF). Chinese Physics C. 45 (3): 030001. doi:10.1088/1674-1137/abddae.
McMillan, Edwin; Abelson, Philip Hauge (1940-06-15). "Radioactive Element 93". Physical Review. 57 (12): 1185–1186. Bibcode:1940PhRv...57.1185M. doi:10.1103/PhysRev.57.1185.2.
Dabos, S.; Dufour, C.; Benedict, U.; Pagès, M. (1987). "Bulk modulus and P–V relationship up to 52 GPa of neptunium metal at room temperature". Journal of Magnetism and Magnetic Materials. 63–64: 661–3. Bibcode:1987JMMM...63..661D. doi:10.1016/0304-8853(87)90697-4.
Lee, J.; Mardon, P.; Pearce, J.; Hall, R. (1959). "Some physical properties of neptunium metal II: A study of the allotropic transformations in neptunium". Journal of Physics and Chemistry of Solids. 11 (3–4): 177–181. Bibcode:1959JPCS...11..177L. doi:10.1016/0022-3697(59)90211-2.
Dunlap, B. D.; Brodsky, M. B.; Shenoy, G. K.; Kalvius, G. M. (1970). "Hyperfine interactions and anisotropic lattice vibrations of ²³⁷Np in α-Np metal". Physical Review B. 1 (1): 44–46. Bibcode:1970PhRvB...1...44D. doi:10.1103/PhysRevB.1.44.
Stephens, D. R. (1966). "Phase diagram and compressibility of neptunium". Journal of Physics. 27 (8): 1201–4. Bibcode:1966JPCS...27.1201S. doi:10.1016/0022-3697(66)90002-3.
T. D. Matsuda; Y. Hagal; D. Aoki; H. Sakai; Y. Homma; N. Tateiwa; E. Yamamoto; Y. Onuki (2009). "Transport properties of neptunium superconductor NpPd₅Al₂". Journal of Physics: Conference Series. 150 (4): 042119. Bibcode:2009JPhCS.150d2119M. doi:10.1088/1742-6596/150/4/042119.
Martin, W. C.; Hagan, Lucy; Reader, Joseph; Sugan, Jack (1974). "Ground Levels and Ionization Potentials for Lanthanide and Actinide Atoms and Ions" (PDF). J. Phys. Chem. Ref. Data. 3 (3): 771–9. Bibcode:1974JPCRD...3..771M. doi:10.1063/1.3253147. Archived from the original (PDF) on 2014-02-11. Retrieved 2013-10-19.
Koch, Lothar (2000). "Transuranium Elements". Transuranium Elements, in Ullmann's Encyclopedia of Industrial Chemistry. Wiley. doi:10.1002/14356007.a27_167. ISBN 978-3527306732.
Weiss, Peter (2 July 2009). "Neptunium nukes?: Little-studied metal goes critical". Science News. 162 (17): 259. doi:10.2307/4014034. JSTOR 4014034.
Thompson, Roy C. (1982). "Neptunium: The Neglected Actinide: A Review of the Biological and Environmental Literature". Radiation Research. 90 (1): 1–32. Bibcode:1982RadR...90....1T. doi:10.2307/3575792. JSTOR 3575792. PMID 7038752.
Audi, Georges; Bersillon, Olivier; Blachot, Jean; Wapstra, Aaldert Hendrik (2003), "The NUBASE evaluation of nuclear and decay properties", Nuclear Physics A, 729: 3–128, Bibcode:2003NuPhA.729....3A, doi:10.1016/j.nuclphysa.2003.11.001
Wallner, A.; Faestermann, T.; Feige, J.; Feldstein, C.; Knie, K.; Korschinek, G.; Kutschera, W.; Ofan, A.; Paul, M.; Quinto, F.; Rugel, G.; Steier, P. (2015). "Abundance of live ²⁴⁴Pu in deep-sea reservoirs on Earth points to rarity of actinide nucleosynthesis". Nature Communications. 6: 5956. arXiv:1509.08054. Bibcode:2015NatCo...6.5956W. doi:10.1038/ncomms6956. ISSN 2041-1723. PMC 4309418. PMID 25601158.
Fajans, Kasimir (1913). "Die radioaktiven Umwandlungen und das periodische System der Elemente (Radioactive Transformations and the Periodic Table of the Elements)". Berichte der Deutschen Chemischen Gesellschaft. 46: 422–439. doi:10.1002/cber.19130460162.
Fermi, E. (1934). "Possible Production of Elements of Atomic Number Higher than 92". Nature. 133 (3372): 898–899. Bibcode:1934Natur.133..898F. doi:10.1038/133898a0.
Ida Noddack (1934). "Über das Element 93". Zeitschrift für Angewandte Chemie. 47 (37): 653–655. Bibcode:1934AngCh..47..653N. doi:10.1002/ange.19340473707.
Koblic, Odolen (1934). "A New Radioactive Element beyond Uranium". Nature. 134 (3376): 55. Bibcode:1934Natur.134R..55.. doi:10.1038/134055b0.
Speter, M. (1934). "Bohemium - An Obituary". Science. 80 (2086): 588–9. Bibcode:1934Sci....80..588S. doi:10.1126/science.80.2086.588-a. PMID 17798409.
Peppard, D. F.; Mason, G. W.; Gray, P. R.; Mech, J. F. (1952). "Occurrence of the (4n + 1) Series in Nature". Journal of the American Chemical Society. 74 (23): 6081–6084. Bibcode:1952JAChS..74.6081P. doi:10.1021/ja01143a074.
Meitner, Lise; Frisch, O. R. (1939). "Disintegration of Uranium by Neutrons: a New Type of Nuclear Reaction". Nature. 143 (3615): 239–240. Bibcode:1939Natur.143..239M. doi:10.1038/143239a0. S2CID 4113262.
Ikeda, Nagao (25 July 2011). "The discoveries of uranium 237 and symmetric fission — From the archival papers of Nishina and Kimura". Proceedings of the Japan Academy, Series B: Physical and Biological Sciences. 87 (7): 371–6. Bibcode:2011PJAB...87..371I. doi:10.2183/pjab.87.371. PMC 3171289. PMID 21785255.
Segrè, Emilio (1939). "An Unsuccessful Search for Transuranium Elements". Physical Review. 55 (11): 1104–5. Bibcode:1939PhRv...55.1104S. doi:10.1103/PhysRev.55.1104.
Mcmillan, Edwin; Abelson, Philip (1940). "Radioactive Element 93". Physical Review. 57 (12): 1185–1186. Bibcode:1940PhRv...57.1185M. doi:10.1103/PhysRev.57.1185.2.
The name neptunium was used by R.Hermann in 1877 for a chemical element which, in his opinion, could be separated from a mineral tantalite; actually, this was a misidentification. See "Chemical Notes : The New Metals Ilmenium and Neptunium". Nature. 15: 520–521. 1877. doi:10.1038/015520a0.
Clark, David L.; Hecker, Siegfried S.; Jarvinen, Gordon D.; Neu, Mary P. (2006). "Neptunium". In Morss, Lester R.; Edelstein, Norman M.; Fuger, Jean (eds.). The Chemistry of the Actinide and Transactinide Elements (PDF). Vol. 3 (3rd ed.). Dordrecht, the Netherlands: Springer. p. 814. doi:10.1007/1-4020-3598-5_7. ISBN 978-1-4020-3555-5. Archived from the original (PDF) on 2010-07-17. Retrieved 2014-06-29.
Winterberg, Friedwardt; Herrmann, Günter; Fodor, Igor; Wolfenstein, Lincoln; Singer, Mark E. (1996). "More on How Nazi Germany Failed to Develop the Atomic Bomb". Physics Today. 49 (1): 11–15, 83. Bibcode:1996PhT....49a..11W. doi:10.1063/1.2807455.
Cabell, M. J.; Slee, L. J. (1962). "The ratio of neutron capture to fission for uranium-235". Journal of Inorganic and Nuclear Chemistry. 24 (12): 1493–1500. doi:10.1016/0022-1902(62)80002-5.
Neck, V.; Kim, J. I.; Kanellakopulos, B. (1992). "Solubility and hydrolysis behaviour of neptunium(V)". Radiochim. Acta. 56: 25–30. doi:10.1524/ract.1992.56.1.25. S2CID 99239460.
Kato, Y.; Kimura, T.; Yoshida, Z.; Nitani, N. (1996). "Solid-Liquid Phase-Equilibria Of Np(VI) And Of U(VI) Under Controlled CO₂ Partial Pressures". Radiochim. Acta. 74: 21–25. doi:10.1524/ract.1996.74.special-issue.21. S2CID 100097624.
Fahey, J. A.; Turcotte, R. P.; Chikalla, T. D. (1976). "Decomposition, stoichiometry and structure of neptunium oxides". Journal of Inorganic and Nuclear Chemistry. 38 (3): 495–500. doi:10.1016/0022-1902(76)80291-6.
Richter K.; Sari C. (1987). "Phase relationships in the neptunium-oxygen system". Journal of Nuclear Materials. 148 (3): 266–71. Bibcode:1987JNuM..148..266R. doi:10.1016/0022-3115(87)90019-5.
Benedict, U.; Dabos, S.; Dufour, C.; Spirelet, J. C. (1986). "Neptunium compounds under high pressure". Journal of the Less Common Metals. 121: 461–68. doi:10.1016/0022-5088(86)90563-1.
Keller, C.; Kock, L.; Walter, K. H. (1965). "Die reaktion der oxide der transurane mit alkalioxiden—I: Ternäre oxide der sechswertigen transurane mit lithium und natrium". Journal of Inorganic and Nuclear Chemistry. 27 (6): 1205–23. doi:10.1016/0022-1902(65)80083-5.
Carnall, W. T.; Neufeldt, S. J.; Walker, A. (1965). "Reactions in Molten Salt Solutions. I. Uranate and Neptunate Formation in Molten Lithium Nitrate-Sodium Nitrate". Inorganic Chemistry. 4 (12): 1808–13. doi:10.1021/ic50034a034.
Morss, L. R.; Appelman, E. H.; Gerz, R. R.; Martin-Rovet, D. (1994). "Structural studies of Li₅ReO₆, Li₄NpO₅ and Li₅NpO₆ by neutron and X-ray powder diffraction". Journal of Alloys and Compounds. 203: 289–95. doi:10.1016/0925-8388(94)90748-x.
Keller, C.; Seiffert, H. (1969). "Li₅NpO₆, die erste kristalline verbindung mit siebenwertigem neptunium; zur frage der existenz von siebenwertigem plutonium und americium". Inorganic and Nuclear Chemistry Letters. 5: 51–7. doi:10.1016/0020-1650(69)80236-9.
Awasthi, S. K.; Martinot, L.; Fuger, J.; Duyckaerts, G. (1971). "Preparation and Characterisation of some Np(VII) Compounds". Inorganic and Nuclear Chemistry Letters. 7 (2): 145–51. doi:10.1016/0020-1650(71)80143-5.
Hoekstra, H. R.; Gebert, E. (1977). "Some ternary oxides of neptunium and plutonium with the alkali metals". Journal of Inorganic and Nuclear Chemistry. 39 (12): 2219–21. doi:10.1016/0022-1902(77)80399-0.
Kleinschmidt, P. D.; Lau, K. H.; Hildenbrand, D. L. (1992). "Sublimation studies of NpF₄". Journal of Chemical Physics. 97 (3): 1950–3. Bibcode:1992JChPh..97.1950K. doi:10.1063/1.463131.
Malm, J. G.; Weinstock, B.; Weaver, E. (1958). "The Preparation and Properties of NpF₆; a Comparison with PuF₆". Journal of Physical Chemistry. 62 (12): 1506–8. doi:10.1021/j150570a009.
Eller, P. G.; Asprey, L. B.; Kinkead, S. A.; Swanson, B. I.; et al. (1998). "Reaction of Dioxygen Difluoride with Neptunium Oxides and Fluorides". Journal of Alloys and Compounds. 269 (1–2): 63–6. doi:10.1016/s0925-8388(98)00005-x.
Kleinschmidt, P. D.; Lau, K. H.; Hildenbrand, D. L. (1992). "Sublimation studies of NpO₂F₂". Journal of Chemical Physics. 97 (4): 2417–21. Bibcode:1992JChPh..97.2417K. doi:10.1063/1.463080.
Peacock, R. D.; Edelstein, N. (1976). "Some reactions of neptunium hexafluoride". Journal of Inorganic and Nuclear Chemistry. 38 (4): 771–3. doi:10.1016/0022-1902(76)80353-3.
Fried, S.; Davidson, N. R. (1948). "The preparation of solid neptunium compounds". Journal of the American Chemical Society. 70 (11): 3539–47. Bibcode:1948JAChS..70.3539F. doi:10.1021/ja01191a003. PMID 18102891.
Zachariasen, W. H. (1949). "Crystal chemical studies of the tf-series of elements. X. Sulfides and ox\-sulfides". Acta Crystallographica. 2 (5): 291–6. Bibcode:1949AcCry...2..291Z. doi:10.1107/s0365110x49000758.
Peacock, R. D.; Edelstein, N. (1997). "High pressure X-ray diffraction experiments on NpS and PuS up to 60 GPa". High Pressure Research. 15 (6): 387–92. Bibcode:1997HPR....15..387B. doi:10.1080/08957959708240482.
Thevenin, T.; Jove, J.; Pages, M. (1985). "Crystal chemistry and ²³⁷Np mossbauer investigations on neptunium oxide chalcogenides NpOS and NpOSe". Materials Research Bulletin. 20 (6): 723–30. doi:10.1016/0025-5408(85)90151-5.
Thevenin, T.; Pages, M. (1982). "Crystallographic and magnetic studies of a new neptunium selenide: Np₂Se₅". Journal of the Less Common Metals. 84: 133–7. doi:10.1016/0022-5088(82)90138-2.
Sheft, I.; Fried, S. (1953). "Neptunium Compounds". Journal of the American Chemical Society. 75 (5): 1236–7. Bibcode:1953JAChS..75.1236S. doi:10.1021/ja01101a067.
Olson, W. M.; Mulford R. N. R. (1966). "The melting point and decomposition pressure of neptunium mononitride". Journal of Physical Chemistry. 70 (9): 2932–2934. doi:10.1021/j100881a035.
Blaise, A.; Damien, D.; Suski, W. (1981). "Electrical resistivity of neptunium mono and diarsenide". Solid State Communications. 37 (8): 659–62. Bibcode:1981SSCom..37..659B. doi:10.1016/0038-1098(81)90543-3.
Dabos, S.; Dufour, C.; Benedict, U.; Spirlet, J. C.; et al. (1986). "High-pressure X-ray diffraction on neptunium compounds: Recent results for NpAs". Physica B. 144 (1): 79–83. Bibcode:1986PhyBC.144...79D. doi:10.1016/0378-4363(86)90296-2.
Aldred, A. T.; Dunlap, B. D.; Harvey, A. R.; Lam, D. J.; et al. (1974). "Magnetic properties of the neptunium monopnictides". Physical Review B. 9 (9): 3766–78. Bibcode:1974PhRvB...9.3766A. doi:10.1103/PhysRevB.9.3766.
Burlet, P.; Bourdarot, F.; Rossat-Mignod, J.; Sanchez, J. P.; et al. (1992). "Neutron diffraction study of the magnetic ordering in NpBi". Physica B. 180: 131–2. Bibcode:1992PhyB..180..131B. doi:10.1016/0921-4526(92)90683-J.
De Novion, C. H.; Lorenzelli, R. (1968). "Proprietes electroniques du monocarbure et du mononitrure de neptunium". Journal of Physics and Chemistry of Solids. 29 (10): 1901–5. Bibcode:1968JPCS...29.1901D. doi:10.1016/0022-3697(68)90174-1.
Lange, R; Carroll, W. (2008). "Review of recent advances of radioisotope power systems". Energy Conversion and Management. 49 (3): 393–401. Bibcode:2008ECM....49..393L. doi:10.1016/j.enconman.2007.10.028.
Rodriguez, C; Baxter, A.; McEachern, D.; Fikani, M.; et al. (2003). "Deep-Burn: making nuclear waste transmutation practical". Nuclear Engineering and Design. 222 (2–3): 299–317. Bibcode:2003NuEnD.222..299R. doi:10.1016/S0029-5493(03)00034-7.

dtic.mil

apps.dtic.mil

S. Fried, N. R. Davidson: The Basic Dry Chemistry of Neptunium, (1947) Report MDDC-1332, United States Atomic Energy Commission - Argonne National Laboratory, Declassified: July 18, 1947.

escholarship.org

Peacock, R. D.; Edelstein, N. (1976). "Some reactions of neptunium hexafluoride". Journal of Inorganic and Nuclear Chemistry. 38 (4): 771–3. doi:10.1016/0022-1902(76)80353-3.

europa.eu

ec.europa.eu

"Evaluation of nuclear criticality safety data and limits for actinides in transport" (PDF). Institut de Radioprotection et de Sûreté Nucléaire. p. 15. Retrieved 2010-12-20.

fas.org

"Restricted Data Declassification Decisions from 1946 until Present", accessed Sept 23, 2006.
"Yucca Mountain" (PDF). Retrieved 2009-06-06.

fnal.gov

www-d0.fnal.gov

Magnetic susceptibility of the elements and inorganic compounds, in Handbook of Chemistry and Physics 81st edition, CRC press.

harvard.edu

ui.adsabs.harvard.edu

McMillan, Edwin; Abelson, Philip Hauge (1940-06-15). "Radioactive Element 93". Physical Review. 57 (12): 1185–1186. Bibcode:1940PhRv...57.1185M. doi:10.1103/PhysRev.57.1185.2.
Dabos, S.; Dufour, C.; Benedict, U.; Pagès, M. (1987). "Bulk modulus and P–V relationship up to 52 GPa of neptunium metal at room temperature". Journal of Magnetism and Magnetic Materials. 63–64: 661–3. Bibcode:1987JMMM...63..661D. doi:10.1016/0304-8853(87)90697-4.
Lee, J.; Mardon, P.; Pearce, J.; Hall, R. (1959). "Some physical properties of neptunium metal II: A study of the allotropic transformations in neptunium". Journal of Physics and Chemistry of Solids. 11 (3–4): 177–181. Bibcode:1959JPCS...11..177L. doi:10.1016/0022-3697(59)90211-2.
Dunlap, B. D.; Brodsky, M. B.; Shenoy, G. K.; Kalvius, G. M. (1970). "Hyperfine interactions and anisotropic lattice vibrations of ²³⁷Np in α-Np metal". Physical Review B. 1 (1): 44–46. Bibcode:1970PhRvB...1...44D. doi:10.1103/PhysRevB.1.44.
Stephens, D. R. (1966). "Phase diagram and compressibility of neptunium". Journal of Physics. 27 (8): 1201–4. Bibcode:1966JPCS...27.1201S. doi:10.1016/0022-3697(66)90002-3.
T. D. Matsuda; Y. Hagal; D. Aoki; H. Sakai; Y. Homma; N. Tateiwa; E. Yamamoto; Y. Onuki (2009). "Transport properties of neptunium superconductor NpPd₅Al₂". Journal of Physics: Conference Series. 150 (4): 042119. Bibcode:2009JPhCS.150d2119M. doi:10.1088/1742-6596/150/4/042119.
Martin, W. C.; Hagan, Lucy; Reader, Joseph; Sugan, Jack (1974). "Ground Levels and Ionization Potentials for Lanthanide and Actinide Atoms and Ions" (PDF). J. Phys. Chem. Ref. Data. 3 (3): 771–9. Bibcode:1974JPCRD...3..771M. doi:10.1063/1.3253147. Archived from the original (PDF) on 2014-02-11. Retrieved 2013-10-19.
Thompson, Roy C. (1982). "Neptunium: The Neglected Actinide: A Review of the Biological and Environmental Literature". Radiation Research. 90 (1): 1–32. Bibcode:1982RadR...90....1T. doi:10.2307/3575792. JSTOR 3575792. PMID 7038752.
Audi, Georges; Bersillon, Olivier; Blachot, Jean; Wapstra, Aaldert Hendrik (2003), "The NUBASE evaluation of nuclear and decay properties", Nuclear Physics A, 729: 3–128, Bibcode:2003NuPhA.729....3A, doi:10.1016/j.nuclphysa.2003.11.001
Wallner, A.; Faestermann, T.; Feige, J.; Feldstein, C.; Knie, K.; Korschinek, G.; Kutschera, W.; Ofan, A.; Paul, M.; Quinto, F.; Rugel, G.; Steier, P. (2015). "Abundance of live ²⁴⁴Pu in deep-sea reservoirs on Earth points to rarity of actinide nucleosynthesis". Nature Communications. 6: 5956. arXiv:1509.08054. Bibcode:2015NatCo...6.5956W. doi:10.1038/ncomms6956. ISSN 2041-1723. PMC 4309418. PMID 25601158.
Fermi, E. (1934). "Possible Production of Elements of Atomic Number Higher than 92". Nature. 133 (3372): 898–899. Bibcode:1934Natur.133..898F. doi:10.1038/133898a0.
Ida Noddack (1934). "Über das Element 93". Zeitschrift für Angewandte Chemie. 47 (37): 653–655. Bibcode:1934AngCh..47..653N. doi:10.1002/ange.19340473707.
Koblic, Odolen (1934). "A New Radioactive Element beyond Uranium". Nature. 134 (3376): 55. Bibcode:1934Natur.134R..55.. doi:10.1038/134055b0.
Speter, M. (1934). "Bohemium - An Obituary". Science. 80 (2086): 588–9. Bibcode:1934Sci....80..588S. doi:10.1126/science.80.2086.588-a. PMID 17798409.
Peppard, D. F.; Mason, G. W.; Gray, P. R.; Mech, J. F. (1952). "Occurrence of the (4n + 1) Series in Nature". Journal of the American Chemical Society. 74 (23): 6081–6084. Bibcode:1952JAChS..74.6081P. doi:10.1021/ja01143a074.
Meitner, Lise; Frisch, O. R. (1939). "Disintegration of Uranium by Neutrons: a New Type of Nuclear Reaction". Nature. 143 (3615): 239–240. Bibcode:1939Natur.143..239M. doi:10.1038/143239a0. S2CID 4113262.
Ikeda, Nagao (25 July 2011). "The discoveries of uranium 237 and symmetric fission — From the archival papers of Nishina and Kimura". Proceedings of the Japan Academy, Series B: Physical and Biological Sciences. 87 (7): 371–6. Bibcode:2011PJAB...87..371I. doi:10.2183/pjab.87.371. PMC 3171289. PMID 21785255.
Segrè, Emilio (1939). "An Unsuccessful Search for Transuranium Elements". Physical Review. 55 (11): 1104–5. Bibcode:1939PhRv...55.1104S. doi:10.1103/PhysRev.55.1104.
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