Melik-Ogandzhanyan, R. G.; Danagulyan, G. G.; Fagradyan, S. A.; Mirozoyan, V. S.; Okhikyan, V. M.; et al. Pharmaceutical Chemistry Journal, 1983 , vol. 17, # 3 p. 190 - 195 Khimiko-Farmatsevticheskii Zhurnal, 1983 , vol. 17, # 3 p. 299 - 303