Mykolenko, D. V. “Stefan Stambolov and «stambolovists» in the Opposition to the Government of Konstantin Stoilov (1894–1895)”. The Journal of V. N. Karazin Kharkiv National University. Series History, no. 50, Apr. 2015, pp. 286-7, https://periodicals.karazin.ua/history/article/view/1566.