GAWOR, Łukasz; SZMATŁOCH, A.; DOLNICKI, P. Valorization of Post-mining Dumping Grounds as Geotourism Sites on the Example of the Ruhr Region. Studies of the Industrial Geography Commission of the Polish Geographical Society, [S. l.], v. 24, p. 106–118, 2013. DOI: 10.24917/20801653.24.7. Disponível em: https://prace-kgp.uken.krakow.pl/article/view/1503. Acesso em: 22 jul. 2024.