Daukshas, V. K.; Gaidyalis, P. G.; Udrenaite, E. B.; Labanauskas, L. K.; Ramanauskas, D. V.; et al.
Pharmaceutical Chemistry Journal, 1991 , vol. 25, # 7 p. 442 - 444
Khimiko-Farmatsevticheskii Zhurnal, 1991 , vol. 25, # 7 p. 14 - 16