Inorganic Chemistry, , vol. 39, # 4 p. 630 - 631

Bulgakov, V. A.; Gorodetskaya, N. N.; Nikiforov, G. A.; Ershov, V. V.
Bulletin of the Academy of Sciences of the USSR, Division of Chemical Science (English Translation), 1983 , vol. 32, # 1 p. 59 - 62
Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, 1983 , # 1 p. 71 - 75

Hanna, Tracy A.; Incarvito, Christopher D.; Rheingold, Arnold L.
Inorganic Chemistry, 2000 , vol. 39, # 4 p. 630 - 631