1. Beritov, I.S.,Struktura i funktsii kory bol’shogo mozga (Structure and Functions of the Cerebral Cortex), Moscow, 1969.
2. Krushinskii, L.B.,Biologicheskie osnovy rassudochnoi deyatel’nosti (Biological Basis of Intellectual Activity), Moscow, 1986.
3. Köhler, V.,Issledovanie intellekta chelovekoobraznykh obez’yan (Studies on Intellect of the Anthropoid Apes), Moscow, 1930.
4. Pirogov, A.A., Erofeev, A.I., Engovatov, V.V., and Pichugin, V.Yu.., Optimization of the Instrumental Food-Obtaining Skill in MonkeyMacaco mulata in a Time Deficit Situation,Zh. Evol. Biokhim. Fiziol, 1999, vol. 35, pp. 132–139.
5. Fress, P., Emotions,Experimental’naya psikhologiya (Experimental Psychology), Issue 5, Moscow, 1975.