Chen, Yayong, Chaojun Hou, Yu Tang, Jiajun Zhuang, Jintian Lin, and Shaoming Luo. 2019. “An Effective Spray Drift-Reducing Method for a Plant-Protection Unmanned Aerial Vehicle”. International Journal of Agricultural and Biological Engineering 12 (5):14-20. https://ijabe.migration.pkpps06.publicknowledgeproject.org/index.php/ijabe/article/view/4289.