BALABAN, M. . Nachtigall in the battle for Lviv Ledge. Structure, tasks, actions. Studia z Dziejów Rosji i Europy Środkowo-Wschodniej, [S. l.], v. 56, n. 3, p. 85–106, 2022. DOI: 10.12775/SDR.2021.EN6.04. Disponível em: https://apcz.umk.pl/SDR/article/view/36873. Acesso em: 27 kwi. 2024.