1. Crumley, Carole L. (1995) УHeterarchy and the Analysis of Complex SciencesФ, Archeological Papers of the American Anthropological Association 6, pp. 1Ц5.

2. Foerster, Heinz von (2003) Understanding Understanding. Essays on Cybernetics and Cognition, Springer-Verlag, New York.

3. Glasersfeld, Ernst von (1987) Wissen, Sprache und Wirklichkeit, Vieweg, Wiesbaden.

4. Glasersfeld, Ernst von (1995) Radical Constructivism: A Way of Knowing and Learning, Falmer Press, London.

5. Kant, Immanuel (1787) Kritik der reinen Vernunft, Hartknoch, Riga (Russian Translation 2011).

6. Kauffman, Louis H. (2017) УSelf-Reference and the SelfФ, Constructivist Foundations Vol. 13, 1, pp. 28Ц30.

7. Luhmann, Niklas (2004) Die Realitat der Massenmedien, GWV Fachverlage Gmbh, Wiesbaden (Russian Translation 2005).

8. Mamardashvili, Merab K. (2001) Cartesian reflections, Progress-Tradiciya, Moscow (in Russian).

9. Maturana, Humberto R. (1970) УBiology of CognitionФ, BCL Report 90 (Russian Translation 1995).

10. McCulloch, Warren S. (1945) УA heterarchy of values determined by the topology of nervous netsФ, The bulletin of mathematical biophysics, 7, pp. 89Ц93.

11. Morin, Edgar (1977) La Methode. La Nature de la Nature, Editions du Seuil (Russian Translation 2005).

12. Rosenblueth, Arturo., Wiener, Norbert., Bigelow Julian (1943) УBehavior, Purpose and TeleologyФ, Philosophy of Science, Vol. 10, 1, pp. 18Ц24.

13. Schmidt, Siegfried J. (2011) УThe observer story: Heinz von Foerster's heritageФ, Cybernetics & Human Knowing, 18, pp. 151Ц155.

14. Spencer-Brown, George (1972) Laws of Form, The Julian Press, New York.

15. Trufanova, Elena O. (2010) Unity and Plurality of the Self, Kanon, Moscow (in Russian).

16. Tsokolov, Sergey (2000) Discours of the Radical Constructivism, PHREN, Munchen (in Russian).