Synthesis of superheavy nuclei at limits of stability: 239,240Pu + 48Ca and 249–251Cf + 48Ca reactions (PDF). Super Heavy Nuclei International Symposium
(原始内容存档于2016-02-02) (英语). Gorter, C. J. A New Suggestion for Aligning Certain Atomic Nuclei. Physica. 1948, 14 (8): 504. Bibcode:1948Phy....14..504G. doi:10.1016/0031-8914(48)90004-4