1. Popper K (1959) The logic of science discovery. Hutchinson & Co
2. Kuhn TS (1962) The structure of scientific evolution. The University of Chicago Press, Chicago
3. Bertalanffy L (1968) General system theory: foundations, development, applications. G. Graziller, New York
4. Nicolis G, Prigogine I (1977) Self-organization in nonequilibrium systems: from dissipative structures to order through fluctuations. Wiley
5. Maturana HR, Varela FJ (1980) Autopoiesis and cognition: the realization of the living. D. Reidel/Springer, Boston