OBSULEWICZ, Beata K. Ferdynand Ruszczyc, Jan Bułhak i Uniwersytet Wileński. Vilnius University Open Series, [S. l.], p. 388–405, 2021. DOI: 10.15388/PZOP.2020.21. Disponível em: https://www.zurnalai.vu.lt/open-series/article/view/22751.. Acesso em: 3 may. 2024.