Liu, Quanwei, Tao Cui, Dongxing Zhang, Li Yang, Yunxia Wang, Xiantao He, and Mantao Wang. 2018. “Design and Experimental Study of Seed Precise Delivery Mechanism for High-Speed Maize Planter”. International Journal of Agricultural and Biological Engineering 11 (4):81-87. https://ijabe.migration.pkpps03.publicknowledgeproject.org/index.php/ijabe/article/view/2802.