Kryshtal, G. V.; Zhdankina, G. M.; Serebryakov, E. P.
Russian Chemical Bulletin, 1993 , vol. 42, # 5 p. 866 - 869
Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, 1993 , # 5 p. 910 - 913
Lokhande, S. B.; Rangnekar, D. W.
Indian Journal of Chemistry, Section B: Organic Chemistry Including Medicinal Chemistry, 1986 , vol. 25, p. 485 - 488