Дуць-Файфер, Олена. 2019. “Pysma – Dokumentŷ Svitovoho Kongresu Rusyniv I Svitovoj Radŷ Rusyniv (1991-2019)”. Rocznik Ruskiej Bursy 15 (February):17-89. https://journals.akademicka.pl/rrb/article/view/1158.