Gibiec, M. (2020). Senyk’s Archive and its significance for studies on the behind-the-scenes picture of the Organisation of Ukrainian Nationalists. New research perspectives in the light of discovered correspondence. Studia Z Dziejów Rosji I Europy Środkowo-Wschodniej, 54(3), 109–126. https://doi.org/10.12775/SDR.2019.EN4.05