Levchuk, Kostiantyn. 2019. “The Crisis and Decay of the CPSU-CPU in 1986-1991”. Scientific Papers of the Vinnytsia Mykhailo Kotsyiubynskyi State Pedagogical University Series History, no. 29 (September): 43-47. https://doi.org/10.31652/2411-2143-2019-29-43-47.