Brokenshire,J.L. et al.
Journal of the American Chemical Society, 1972 , vol. 94, # 20 p. 7040 - 7049

Petrosyan, V. A.; Niyazymbetov, M. E.; Ul'yanova, E. V.
Bulletin of the Academy of Sciences of the USSR, Division of Chemical Science (English Translation), 1990 , vol. 39, # 3.2 p. 546 - 550
Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, 1990 , # 3 p. 625 - 629

Petrosyan, V. A.; Niyazymbetov, M. E.; Ul'yanova, E. V.
Bulletin of the Academy of Sciences of the USSR, Division of Chemical Science (English Translation), 1990 , vol. 39, # 3.2 p. 546 - 550
Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, 1990 , # 3 p. 625 - 629