KITTEL, P.; SIKORA, J.; WRONIECKI, P. The morphology of the Luciąża River valley floor in the vicinity of the Rozprza medieval ring-fort in light of geophysical survey. Bulletin of Geography. Physical Geography Series, [S. l.], n. 8, p. 95–106, 2015. DOI: 10.2478/7033. Disponível em: https://apcz.umk.pl/BOGPGS/article/view/7033. Acesso em: 25 apr. 2024.