Shul'ga, N. A.; Balyakina, M. V.; Gunar, V. I.
Pharmaceutical Chemistry Journal, 1983 , vol. 17, # 9 p. 665 - 669
Khimiko-Farmatsevticheskii Zhurnal, 1983 , vol. 17, # 9 p. 1111 - 1115