1. W. Köhler: Dynamics in Psychology, (New York, liveright 1940), pp.5f
2. D. Marr: Vision, (San Francisco, Freeman 1982)
3. J.J. Gibson: The Ecological Approach to Visual Perception, (Boston, Houghton Mifflin 1979)
4. See e.g. W. Köhler: The Task of Gestalt Psychology, (Princeton, New Jersey, Princeton University Press 1969)
5. M. Stadler, P. Kruse: The self-organization perspective in cognition research: historical remarks and new experimental approaches, in Synergetics of Cognition, ed. by H. Haken and M. Stadler, (Berlin, Springer 1990), pp. 32–52