Maintenance of the Photovolatic PlantsUsing UAV Equipped with Low-costGNSS RTK Receiver. - Bilal Muhammad 015; Ramjee Prasad; Marco Nisi; Fabio Menichetti; Ernestina Cianca; Alberto Mennella; Graziano Gagliarde; Davide Marenchino (J. Mobile Multimedia, 2018)