Pudovik, M. A.; Mikhailov, Yu. B.; Mironova, T. A.; Pudovik, A. N.
Bulletin of the Academy of Sciences of the USSR, Division of Chemical Science (English Translation), 1982 , vol. 31, # 7 p. 1445 - 1447
Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, 1982 , # 7 p. 1624 - 1627