1. Maturana, R.H., Varela, F.J.: The Tree of Knowledge. Shambhala, Boston MA (1987)
2. Maturana, H.R.: Biology of Cognition. Biological Computer Laboratory Research Report BCL 9.0. University of Illinois, Urbana (1970)
3. Alexandrov, Y.I., Druzhinin, V.N.: The Theory of functional systems in psychology. Psychol. J. 19, 6, 4–19 (1998). (in Russian)
4. Cole, М., Cole, S.: Three giants of soviet psychology. Psychol. Today, Mar 43–99 (1971)
5. Dewey, J.: The Early Works, 1882–1898. Southern Illinois University Press, London (1969)