FLOREK, Wacław; RUDOWSKI, Stanisław; SZEFLER, Kazimierz. Palaeo-Valleys in the Region of the Słupia River Mouth. Quaestiones Geographicae, [S. l.], v. 29, n. 3, p. 27–36, 2010. DOI: 10.2478/v10117-010-0020-7. Disponível em: https://pressto.amu.edu.pl/index.php/qg/article/view/v10117-010-0020-7. Acesso em: 6 may. 2024.