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↑ 1,01,11,21,3Hoffman, Darleane C.; Lee, Diana M.; Pershina, Valeria (2006). "Transactinides and the future elements". Ring Morss; Edelstein, Norman M.; Fuger, Jean (eds.). The Chemistry of the Actinide and Transactinide Elements (édisi ka-3rd). Dordrecht, The Netherlands: Springer Science+Business Media. ISBN978-1-4020-3555-5.
↑Thayer, John S. (2010). "Relativistic Effects and the Chemistry of the Heavier Main Group Elements". Relativistic Methods for Chemists. Challenges and Advances in Computational Chemistry and Physics. 10: 83. doi:10.1007/978-1-4020-9975-5_2. ISBN978-1-4020-9974-8.
↑Pershina, Valeria. "Theoretical Chemistry of the Heaviest Elements". Ring Schädel, Matthias; Shaughnessy, Dawn (eds.). The Chemistry of Superheavy Elements (édisi ka-2nd). Springer Science & Business Media. p. 154. ISBN9783642374661.