Rábay, Andor. “1:10000 Scale Mapping With GPS and Free GIS Tools - Comparison With Topographic Map”. Acta Geographica Debrecina Landscape & Environment series 5, no. 1 (June 3, 2011): 11–21. Accessed November 22, 2024. https://ojs.lib.unideb.hu/landsenv/article/view/2280.