Bertalan, László, et al. “UAS Photogrammetry and Object-Based Image Analysis (GEOBIA): Erosion Monitoring at the Kazár Badland, Hungary”. Acta Geographica Debrecina Landscape & Environment Series, vol. 10, no. 3-4, Sept. 2016, pp. 169-78, https://doi.org/10.21120/LE/10/3-4/10.