1. I. P. Ashmarin, Zh. Évol. Biokhim. Fiziol., No. 1, 3 (1982).
2. V. M. Vinogradov, A. A. Klishov, V. D. Katkov, et al., Farmakol. Toksikol., No. 6, 14 (1987).
3. R. A. Danilova and E. V. Gurevich, Neurochemical Mechanisms of Regulation of Memory [in Russian], Pushchino (1984), p. 14.
4. A. V. Kotov, S. M. Tolpygo, K. V. Sudakov, et al., Byull. Éksp. Biol. Med., No. 11, 518 (1987).
5. I. N. Krylova, Yu. V. Drozd, V. I. Naumova, et al., Farmakol. Toksikol., No. 2, 42 (1988).