SZYMCZAK, Jan. Harce’, or Single Combat before the Battle. In: GRABARCZYK, Tadeusz; POGOŃSKA-POL, Magdalena (eds.). Before the Battle. Faces of warPoland: Lodz University Press,2023. v. 7p. 143–159. DOI: 10.18778/8331-303-0.06. Disponível em: https://www.press.uni.lodz.pl/index.php/wul/catalog/book/487/chapter/1369. Acesso em: 7 mar. 2026.