Migoń, Piotr, and Krzysztof Parzóch. “Enigmatic Clusters of Sandstone Boulders on Plateaus of the Stołowe Mountains (Sudetes, South-West Poland) – Their Geoheritage and Geotouristic Value”. Geologos, vol. 27, no. 3, Dec. 2021, pp. 141-55, doi:10.2478/logos-2021-0017.