Petrenko-Lysak, A. “Mobile Communications in the Transit Space of Subway: Sociological Essay”. Visnyk of V. N. Karazin Kharkiv National University. Series "Sociological Studies of Contemporary Society: Methodology, Theory, methods", Vol. 39, Feb. 2018, pp. 239-43, https://periodicals.karazin.ua/ssms/article/view/10205.