J. Pelka-Gosciniak, “Aesthetic and utility values of anthropogenic landforms: a case study of the Silesian Upland, Poland”, Geog. Fis. Dinam. Quat., vol. 30, no. 2, pp. 225–228, Dec. 2007, Accessed: Apr. 03, 2025. [Online]. Available: https://www.gfdq.glaciologia.it/index.php/GFDQ/article/view/332