Eremenko,L.T.; Korolev,A.M.
Bulletin of the Academy of Sciences of the USSR, Division of Chemical Science (English Translation), 1977 , vol. 26, # 2 p. 399 - 401
Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, 1977 , vol. 26, # 2 p. 440 - 444