Abriha, D., Z. Kovács, S. Ninsawat, L. Bertalan, B. Balázs, and S. Szabó. “Identification of Roofing Materials With Discriminant Function Analysis and Random Forest Classifiers on Pan-Sharpened WorldView-2 Imagery – a Comparison”. Hungarian Geographical Bulletin, vol. 67, no. 4, Dec. 2018, pp. 375-92, doi:10.15201/hungeobull.67.4.6.