Oganesyan, E. T.; Simonyan, A. V.; Cherevatyi, V. S.
Pharmaceutical Chemistry Journal, 1988 , vol. 22, # 9 p. 709 - 711
Khimiko-Farmatsevticheskii Zhurnal, 1988 , vol. 22, # 9 p. 1104 - 1108