Volynskii,N.P.; Shcherbakova,L.P.
Bulletin of the Academy of Sciences of the USSR, Division of Chemical Science (English Translation), 1979 , vol. 28, p. 1006 - 1009
Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, 1979 , vol. 28, # 5 p. 1077 - 1080