Yitao, L., Lei, W., & Qingxi, L. (2017). Design and test of an inside-filling pneumatic precision centralized seed-metering device for rapeseed. International Journal of Agricultural and Biological Engineering, 10(2), 56–62. Retrieved from https://ijabe.migration.pkpps03.publicknowledgeproject.org/index.php/ijabe/article/view/2061