Zakharkin, L. I.; Churilova, I. M.
Russian Chemical Bulletin, 1994 , vol. 43, # 4 p. 608 - 611
Izvestiya Akademi Nauk, Seriya Khimicheskaya, 1994 , # 4 p. 659 - 661

Zakharkin, L. I.; Churilova, I. M.
Russian Chemical Bulletin, 1994 , vol. 43, # 4 p. 608 - 611
Izvestiya Akademi Nauk, Seriya Khimicheskaya, 1994 , # 4 p. 659 - 661