KRUPA, Adam. Structure and genesis of the Brzuchowo Lake - Kamien Krajenski Esker. Journal of Education, Health and Sport, [S. l.], v. 6, n. 13, p. 288–306, 2016. Disponível em: https://apcz.umk.pl/JEHS/article/view/4302. Acesso em: 8 jul. 2025.