59 (8): 634–636. Bibcode:1982JChEd..59..634J. doi:10.1021/ed059p634. Trifonov, D. N. Rare-earth elements and their position in the periodic system (translated
Strategy (PDF). NASA. 2015 [2017-09-24]. (原始内容 (PDF)存档于2016-12-22). Trifonov, Edward N. Vocabulary of Definitions of Life Suggests a Definition. Journal