1. Allen, T.F.H., Hoekstra, T.W., 1992. Toward a Unified Ecology. Columbia University Press. New York.
2. Bastian, O., Schreiber, K-F., 1994. Analyse und oekologische Bewertung der Landschaft. Gustav Fischer Verlag Jena, Stuttgart.
3. Bertalanffy, L. von, 1968. General Systems Theory. Foundations, Development and Applications. Braziller, New York.
4. Bohm, D., 1980. Wholeness and the Implicate Order. Routledge and Kegan, London.
5. Bohm, D., Peat, F., 1987. Science, Order, and Creativity. A Dramatic Look at the Roots of Science and Life. Bantam Books, New York.