Huang, Xin, Weiwei Wang, Zhaodong Li, Qingqing Wang, Cunxi Zhu, and Liqing Chen. 2019. “Design Method and Experiment of Machinery for Combined Application of Seed, Fertilizer and Herbicide”. International Journal of Agricultural and Biological Engineering 12 (4):63-71. https://ijabe.migration.pkpps03.publicknowledgeproject.org/index.php/ijabe/article/view/4679.