Kharlamov, Mykhailo. “Fight Against Fires in Kharkiv Region During the War Communism (1919–1921)”. Scientific Papers of the Vinnytsia Mykhailo Kotsyiubynskyi State Pedagogical University Series History, no. 37, Oct. 2021, pp. 38-45, https://doi.org/10.31652/2411-2143-2021-37-38-45.