1. A. N. Leontiev, Activity. Consciousness. Personality (Politizdat, Moscow, 1975) [in Russian].
2. N. V. Chudova, “A conceptual description of the world model for the simulation of behavior based on consciousness,” Iskusstvennyi intellect prinyatie reshenii, No. 2, 51–62 (2012).
3. C. S. Peirce, Collected Papers, Vols. 1–8 (Harvard Univ. Press, Cambridge, Mass., 1931–1958; Alteiya, St. Petersburg, 2000).
4. G. Frege, Logic and Logical Semantics (Aspekt, Moscow, 2000) [in Russian].
5. J. Bruner, Psychology of Knowledge (Progress, Moscow, 1977) [in Russian].