Ziyaev, A. A.; Galust'yan, G. G.; Sabirov, K.; Nasirov, S.; Tashkhodzhaev, B.; Yagudaev, M. R. Journal of Organic Chemistry USSR (English Translation), 1992 , vol. 28, # 7 p. 1221 - 1225 Zhurnal Organicheskoi Khimii, 1992 , vol. 28, # 7 p. 1538 - 1543