Tham khảo Thori

  1. ↑ Magnetic susceptibility of the elements and inorganic compounds, in Handbook of Chemistry and Physics 81st edition, CRC press.
  2. ↑ Hoffman, D. C.; Lawrence, F. O.; Mewherter, J. L.; Rourke, F. M. (1971). “Detection of Plutonium-244 in Nature”. Nature 234 (5325): 132–134. Bibcode:1971Natur.234..132H. doi:10.1038/234132a0. 
  3. 1 2 3 C. R. Hammond. The Elements, in Handbook of Chemistry and Physics 81th edition. CRC press. ISBN 0849304857. 
  4. 1 2 3 4 Earl K. Hyde. The radiochemistry of thorium, Subcommittee on Radiochemistry, National Academy of Sciences—National Research Council, 1960.
  5. 1 2 3 Department of Health and Human Services. Toxicological Profile Information Sheet, TP147-c3. Truy cập from on 2009-05-21.
  6. ↑ Emsley, John (2001). Nature's Building Blocks . Oxford University Press. tr. 441. ISBN 0198503407. 
  7. 1 2 Golub, pp. 215–7
  8. ↑ Greenwood et al., p. 1255
  9. ↑ A. E. van Arkel; de Boer, J. H. (1925). “Darstellung von reinem Titanium-, Zirkonium-, Hafnium- und Thoriummetall”. Zeitschrift für anorganische und allgemeine Chemie (bằng tiếng Đức) 148 (1): 345–350. doi:10.1002/zaac.19251480133.  Bảo trì CS1: Ngôn ngữ không rõ (link)

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