Kashin, A. N.; Tul'chinskii, M. L.; Beletskaya, I. P.; Reutov, O. A.
Bulletin of the Academy of Sciences of the USSR, Division of Chemical Science (English Translation), 1983 , vol. 32, p. 1542
Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, 1983 , # 7 p. 1692