National-liberation struggle for Independent Ukrainian State. — K.: I.F. Kuras Institute of political and ethnic-national studies of NAS of Ukraine, 2009. — 196 p. von O. Potylchak

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The unknown type of dirhem imitation with the "knights sign" of Volodymyr Olgerdovych von O. Potylchak

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Russian copper coin in monetary circulation of the Right-Bank Ukraine in the XVIII century. (Numismatic findings of 2017 from Trushky, Bila Tserkva region) von O. Potylchak

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Igor Shumsky (1898–1974): the steps of service career of the head of UPVI NKVD of the Ukrainian SSR von O. Potylchak

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