Riczu, P., É. Bozsik, B. Gálya, J. Rásó, I. Csiha, A. M. El Shal, J. Nyéki, and J. Tamás. “Volumetric Estimation of an Intensive Apple Orchard With GIS”. International Journal of Horticultural Science 19, no. 3-4 (July 25, 2013): 7–10. Accessed September 22, 2021. https://ojs.lib.unideb.hu/IJHS/article/view/1093.