Li, Hongze, et al. “Performance Characterization on Downwash Flow and Spray Drift of Multirotor Unmanned Agricultural Aircraft System Based on CFD”. International Journal of Agricultural and Biological Engineering, vol. 15, no. 3, June 2022, pp. 1-8, https://ijabe.migration.pkpps03.publicknowledgeproject.org/index.php/ijabe/article/view/7315.