Mavrov,M.V.; Kucherov,V.F.
Bulletin of the Academy of Sciences of the USSR, Division of Chemical Science (English Translation), 1972 , vol. 21, p. 1706 - 1711
Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, 1972 , vol. 21, # 8 p. 1763 - 1769