Grigor'ev, N. A.; Tumanskaya, A. L.; Freidlina, R. Kh.
Bulletin of the Academy of Sciences of the USSR, Division of Chemical Science (English Translation), 1982 , vol. 31, # 11 p. 2280 - 2282
Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, 1982 , # 11 p. 2583 - 2586

Grigor'ev, N. A.; Freidlina, R. Kh.
Bulletin of the Academy of Sciences of the USSR, Division of Chemical Science (English Translation), 1980 , vol. 29, # 3 p. 443 - 447
Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, 1980 , # 3 p. 625 - 629