Kalytko, Serhii, and Oleksandr Kravchuk. “Podillia in the Hetmanate of 1918: A Conservative Model of Domestic Political Stabilization”. Scientific Papers of the Vinnytsia Mykhailo Kotsyiubynskyi State Pedagogical University Series History, no. 13, Oct. 2008, pp. 244-51, https://doi.org/10.31652/2411-2143-2008-13-244-251.