CHOJNICKI, Zbyszko. Empirical-Scientific Model of Geography. Quaestiones Geographicae, [S. l.], v. 30, n. 2, p. 7–22, 2011. DOI: 10.2478/v10117-011-0014-0. Disponível em: https://pressto.amu.edu.pl/index.php/qg/article/view/v10117-011-0014-0. Acesso em: 2 may. 2024.