Ming, Rui, et al. “Test and Evaluation Method for Endurance Performance of Electric Multi-Rotors Spraying Drones”. International Journal of Agricultural and Biological Engineering, vol. 12, no. 2, Apr. 2019, pp. 18-28, https://ijabe.migration.pkpps03.publicknowledgeproject.org/index.php/ijabe/article/view/4348.