Cherstkov, V. F.; Postovoi, S. A.; Lantseva, D. T.; Sterlin, S. R.; Zeifman, Yu. V.; German, L. S.
Bulletin of the Academy of Sciences of the USSR, Division of Chemical Science (English Translation), 1984 , vol. 33, # 12 p. 2508 - 2511
Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, 1984 , # 12 p. 2740 - 2743

Postovoi, S. A.; Lantseva, L. T.; Zeifman, Yu. V.; Knunyants, I. L.
Bulletin of the Academy of Sciences of the USSR, Division of Chemical Science (English Translation), 1982 , vol. 31, # 11 p. 2233 - 2236
Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, 1982 , # 11 p. 2531 - 2535