Daukshas, V. K.; Gaidyalis, P. G.; Udrenaite, E. B.; Pyatrauskas, O. Yu.; Brukshtus, A. B.
Pharmaceutical Chemistry Journal, 1985 , vol. 19, # 9 p. 611 - 614
Khimiko-Farmatsevticheskii Zhurnal, 1985 , vol. 19, # 9 p. 1069 - 1071

Chatelus
Annales de Chimie (Cachan, France), 1949 , vol. <12> 4, p. 505,526