Klinger, Riccardo, Wolfgang Schwanghart, and Brigitta Schütt. “Landscape Classification Using Principal Component Analysis and Fuzzy Classification: Archaeological Sites and Their Natural Surroundings in Central Mongolia”. DIE ERDE – Journal of the Geographical Society of Berlin 142, no. 3: 213–233. Accessed November 21, 2024. https://die-erde.org/index.php/die-erde/article/view/34.