Ma, Duanxu, Song Shi, Hui Li, Guojian Wei, Jilei Zhou, Yupeng Shi, and Hu Liu. 2025. “DEM-CFD-Based Simulation and Optimization of a Combined Pneumatic-Centrifugal Wheat Seed-Metering Device”. International Journal of Agricultural and Biological Engineering 18 (5). Beijing, China:127-41. https://www.ijabe.org/index.php/ijabe/article/view/9438.