Миколенко, Д. “The Political Legacy of S. Stambolov As a Component of the Bulgarian Authoritarianism in 1894–1918”. The Journal of V. N. Karazin Kharkiv National University. Series: History, no. 53, Dec. 2018, pp. 166-79, https://periodicals.karazin.ua/history/article/view/12082.