Yang, Yang, and Hongguang Zhu. 2023. “Fluid-Solid Drag Models Selection for Simulating Wheat Straw Particle Movement in Anaerobic Digester”. International Journal of Agricultural and Biological Engineering 16 (2):249-58. https://www.ijabe.migration.pkpps06.publicknowledgeproject.org/index.php/ijabe/article/view/8003.