Poltorak, V., and O. Shinkarenko. “The Modeling Technologies in the Electoral Companies: «Downs’s paradoxes», «Olson’s paradoxes», «Voting»”. Visnyk of V. N. Karazin Kharkiv National University. Series "Sociological Studies of Contemporary Society: Methodology, Theory, methods", no. 1148, Nov. 2015, pp. 82-85, https://periodicals.karazin.ua/ssms/article/view/4474.