E. G. . Vartanyan, “Bulgaria after liberation: the first steps in the formation of statehood and the role of the Russian Empire in this process (late 1876 – middle 1879)”, Журнал БГУ. История, no. 3, pp. 37–46, Aug. 2025, doi: 10.33581/2520-6338-2025-3-37-46.