Khurana, Jitender M.; Kandpal, Bhaskar M.; Kukreja, Gagan; Sharma, Purnima
Canadian Journal of Chemistry, 2006 , vol. 84, # 8 p. 1019 - 1023

Yusubov, M. S.; Filimonov, V. D.; Ogorodnikov, V. D.
Bulletin of the Academy of Sciences of the USSR, Division of Chemical Science (English Translation), 1991 , vol. 40, # 4.2 p. 766 - 770
Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, 1991 , # 4 p. 868 - 873

Chemistry Letters, , p. 821 - 822