Krylov, I. I.; Kutepov, A. P.; Sokol'skii, G. A.; Knunyants, I. L.
Bulletin of the Academy of Sciences of the USSR, Division of Chemical Science (English Translation), 1982 , vol. 31, # 11 p. 2230 - 2233
Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, 1982 , # 11 p. 2528 - 2531