Zięba, Andrzej A. “Between Russia and Czechoslovakia: Lemko Rus’ Struggle for Political Independence in the Years 1918-1921 and International Politics”. Rocznik Ruskiej Bursy 14 (January 31, 2018): 185–223. Accessed July 11, 2025. https://journals.akademicka.pl/rrb/article/view/707.