Rushchenko, I., and N. Zubar. “Putin and Chaos (How Chaos Theory Is Interpreted in the Kremlin)”. Visnyk of V. N. Karazin Kharkiv National University. Series "Sociological Studies of Contemporary Society: Methodology, Theory, methods", no. 47, Dec. 2021, pp. 7-17, doi:10.26565/2227-6521-2021-47-01.