Moroz,A.A.; Shvartsberg,M.S.
Bulletin of the Academy of Sciences of the USSR, Division of Chemical Science (English Translation), 1973 , vol. 22, p. 464 - 466
Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, 1973 , vol. 22, # 2 p. 476 - 479