Lei, Xiaolong, Hongji Hu, Wenhao Yang, Liyang Liu, Qingxi Liao, and Wanjun Ren. 2021. “Seeding Performance of Air-Assisted Centralized Seed-Metering Device for Rapeseed”. International Journal of Agricultural and Biological Engineering 14 (5). Beijing, China:79-87. https://www.ijabe.org/index.php/ijabe/article/view/5349.