Mytrofanenko, Yurii. " Evolution of Volodymyr Vynnychenko’s political views in 1920 in the context of the crisis of the Soviet form of the Ukrainian state" Universum Historiae et Archeologiae = The Universe of History and Archeology = Універсум історії та археології = Универсум истории и археологии ISSN 2664-9950 (Print) ISSN 2707-6385 (Online) [Online], Volume 4 Number 2 (18 July 2022)