Ushakov, N. V.; Portnykh, E. B.; Pritula, N. A.; Finkel'shtein, E. Sh.
Bulletin of the Academy of Sciences of the USSR, Division of Chemical Science (English Translation), 1989 , vol. <2> 38, # 12 p. 2561 - 2567
Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, 1989 , vol. <2> 38, # 12 p. 2797 - 2803