Koltunov, Joseph. 2019. “Cluster Characteristic Structure of Society - the Basis of Mathematical Sociology”. Visnyk of V. N. Karazin Kharkiv National University. Series Sociological Studies of Contemporary Society: Methodology, Theory, Methods, no. 1053 (August), 76-85. https://periodicals.karazin.ua/ssms/article/view/13703.