Bumagin, N. A.; Gulevich, Yu. N.; Beletskaya, I. P. Bulletin of the Academy of Sciences of the USSR, Division of Chemical Science (English Translation), 1984 , vol. 33, p. 879 Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, 1984 , # 4 p. 953