Nagy, Attila, and János Tamás. “Classification of a Diffuse Heavy Metal Polluted Mining Site Using a Spectral Angle Mapper”. Acta Agraria Debreceniensis, no. 26 (July 16, 2007): 119–123. Accessed April 28, 2024. https://ojs.lib.unideb.hu/actaagrar/article/view/3065.