Szemán, István. “Comparison of the Most Popular Open-Source GIS Software in the Field of Landscape Ecology”. Acta Geographica Debrecina Landscape & Environment series 6, no. 2 (December 21, 2012): 76–92. Accessed April 27, 2024. https://ojs.lib.unideb.hu/landsenv/article/view/2294.