Cai, Jichen, Xiu Wang, Yuanyuan Gao, Shuo Yang, and Chunjiang Zhao. 2019. “Design and Performance Evaluation of a Variable-Rate Orchard Sprayer Based on a Laser-Scanning Sensor”. International Journal of Agricultural and Biological Engineering 12 (6):51-57. https://ijabe.migration.pkpps06.publicknowledgeproject.org/index.php/ijabe/article/view/4174.