Knyazeva, V. F.; Granik, V. G.; Glushkov, R. G.; Arutyunyan, G. S.
Pharmaceutical Chemistry Journal, 1981 , vol. 15, # 5 p. 324 - 328
Khimiko-Farmatsevticheskii Zhurnal, 1981 , vol. 15, # 5 p. 44 - 49