BÉKÉSI, B.; PAPP, I.; SZEGEDI, P. Air and Ground Maintenance of Unmanned Aerial Vehicles. Economica, [S. l.], v. 6, n. 2, p. 99–117, 2020. DOI: 10.47282/ECONOMICA/2013/6/2/4422. Disponível em: https://ojs.lib.unideb.hu/economica/article/view/4422. Acesso em: 6 dec. 2021.