Atanasov, A., R. Mihaylov, S. Stoyanov, D. Mihaylova, and P. Benov. “Drone-Based Monitoring of Sunflower Crops”. ANNUAL JOURNAL OF TECHNICAL UNIVERSITY OF VARNA, BULGARIA, Vol. 6, no. 1, May 2022, pp. 1-9, doi:10.29114/ajtuv.vol6.iss1.258. Accessed 4 Oct. 2023.