1. G. I. Burchinskii, V. E. Kushnir, S. D. Groisman, et al., in: Current Problems in Gastroenterology [in Russian], No. 8, Moscow (1975), pp. 255?262.
2. S. D. Groisman, in: The Physiology and Pathology of Digestion (Proceedings of a Scientific Conference of Physiologists, Pathophysiologists, and Clinicians of the Ukraine and Moldavia) [in Russian], Kishinev (1972), pp. 22?23.
3. P. P. Denisenko, Gangliolytics [in Russian], Leningrad (1959).
4. S. G. Kuznetsov and S. N. Golikov, Synthetic Atropine-Like Substances [in Russian], Leningrad (1962).
5. D. A. Kharkevich, Ganglionic Drugs [in Russian], Moscow (1964).