Füzesi, István, Szabolcs Preznyák, Róbert Szilágyi, and Péter Lengyel. “Examining Drone Logistics Solutions in Retail”.
International Journal of Engineering and Management Sciences 3, no. 4 (September 30, 2018): 48–61. Accessed March 29, 2025.
https://ojs.lib.unideb.hu/IJEMS/article/view/5068.