Pedrotti, F. “Environmental Systems, Vegetation Belts and Potential Vegetation of the Monti Sibillini (Central Italy)”. Oecologia Montana 10, no. 1-2 (December 1, 2001): 13-18. Accessed November 24, 2024. https://om.vuvb.uniza.sk/index.php/OM/article/view/127.