DZIĘGIEL, Maciej. The geotouristic attractiveness of the underground trails in Zabrze, Dąbrowa Górnicza and Tarnowskie Góry towns (Silesian Upland). Geotourism/Geoturystyka, [S. l.], v. 17, n. 1-2(60-61), p. 23–38, 2021. DOI: 10.7494/geotour.2020.1-2(60-61).23. Disponível em: https://journals.agh.edu.pl/geotour/article/view/4534. Acesso em: 14 mar. 2025.