Mihajlow, Radko Petrov, and Albena Ivanova. “DRONE VIDEO CAPTURE – A NEW METHOD IN PRECISION AGRICULTURE”. ANNUAL JOURNAL OF TECHNICAL UNIVERSITY OF VARNA, BULGARIA 3, no. 2 (December 31, 2019): 32–38. Accessed October 2, 2025. https://aj.tu-varna.bg/index.php/ajtuv/article/view/141.