PASKA, Bohdan. The State Security Committee`s use of extrajudicial repression against the Ukrainian Helsinki Group (February 1977 – February 1979). Scientific Papers of the Vinnytsia Mykhailo Kotsyiubynskyi State Pedagogical University Series History, [S. l.], n. 53, p. 74–83, 2025. DOI: 10.31652/2411-2143-2025-53-74-83. Disponível em: https://vspu.net/nzhist/index.php/nzhist/article/view/1096.. Acesso em: 22 jul. 2026.