Yao, Weixiang, Yubin Lan, Sheng Wen, Huihui Zhang, Yali Zhang, Juan Wang, and Chunchun Xie. 2019. “Evaluation of Droplet Deposition and Effect of Variable-Rate Application by a Manned Helicopter With AG-NAV Guía System”. International Journal of Agricultural and Biological Engineering 12 (1):172-78. https://www.ijabe.migration.pkpps06.publicknowledgeproject.org/index.php/ijabe/article/view/4039.