Liu, Wei, Jianping Hu, Mengjiao Yao, Jun Zhao, Imran Ali Lakhiar, Chuantong Lu, Haoran Pan, and Wei Wang. 2021. “Magnetic Field Distribution Simulation and Performance Experiment of a Magnetic Seed-Metering Device Based on the Combined Magnetic System”. International Journal of Agricultural and Biological Engineering 14 (1):108-17. https://ijabe.migration.pkpps03.publicknowledgeproject.org/index.php/ijabe/article/view/5852.