1. A. B. Tomchin, Yu. V. Lapp, and V. S. Dmitrukha, Zh. Organ. Khim., 11, 2347 (1975).
2. D. Bauer and P. W. Sadler, Brit. J. Pharmacol., 15, 101 (1960).
3. P. W. Sadler, Ann. New York Acad. Sci., 130, 71 (1965).
4. A. B. Tomchin, V. S. Dmitrukha, T. N. Timofeeva, and P. S. Pel'kis, Zh. Organ. Khim., 10, 1519 (1974).
5. A. B. Tomchin and G. A. Shirokii, Zh. Organ. Khim., 10, 2465 (1974).