1. L. A. Berezhnaya, Arkh. Anat.,43, No. 9, 71 (1987).
2. N. A. Uranova and A. Yu. Klintsova, Arkh. Anat.,40, No. 5, 32 (1986).
3. P. Grafe and K. Ballanyi, Can. J. Physiol. Pharmacol.,65, No. 5, 1038 (1987).
4. A. Mihaly, U. Kuhnt, L. Siklos, et al., Neurosci. Meth.,20, 283 (1987).
5. D. Ruscakova, Physiol. Bohemoslov.,13, 161 (1964).