Journal of the American Chemical Society, , vol. 114, # 2 p. 601 - 620

Sadovaya, N. K.; Blokhin, A. V.; Tyurekhodzhaeva, M. A.; Grishin, Yu. K.; Surmina, L. S.; et al.
Bulletin of the Academy of Sciences of the USSR, Division of Chemical Science (English Translation), 1990 , vol. 39, # 3.2 p. 637 - 638
Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, 1990 , # 3 p. 716 - 717