Evaluation of Network Real Time Kinematics contribution to the accuracy/productivity ratio for UAS-SfM Photogrammetry. - Stamatia Panagiotopoulou; Athanasia Erkeki; Antonios Antonakakis; Panagiotis Grigorakakis; Vasiliki Protopapa; Georgios Tsiostas; Konstantina Vlachou; Emmanuel Vassilakis (ENC, 2020)