Dzieszko, Maciej, Piotr Dzieszko, Sławomir Królewicz, and Jerzy Cierniewski. 2012. “Digital Aerial Images Land Cover Classification Based on Vegetation Indices”. Quaestiones Geographicae 31 (3):5-23. https://doi.org/10.2478/v10117-012-0026-4.