Laitakarite Stasova M M Izvestiya Akademii Nauk SSSR 4 (1968) 28-31 The crystal structure of bismuthum selenide Bi4Se3 _database_code_amcsd 0012737 4.27 4.27 40 90 90 120 R-3m atom x y z Biso Bi1 0 0 .1445 .8 Bi2 0 0 .2870 .8 Se1 0 0 .417 .8 Se2 0 0 0 .8