Grigor'ev, I. A.; Shchukin, G. I.; Dikanov, S. A.; Kuznetsova, I. K.; Volodarskii, L. B.
Bulletin of the Academy of Sciences of the USSR, Division of Chemical Science (English Translation), 1982 , vol. 31, # 5 p. 972 - 980
Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, 1982 , # 5 p. 1092 - 1101