Nesmeyanova,O.A.; Rudashevskaya,T.Yu.
Bulletin of the Academy of Sciences of the USSR, Division of Chemical Science (English Translation), 1978 , vol. 27, p. 1364 - 1367
Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, 1978 , vol. 27, # 7 p. 1562 - 1565