Wang, Weiwei, et al. “Effects of Key Parameters of Straw Chopping Device on Qualified Rate, Non-Uniformity and Power Consumption”. International Journal of Agricultural and Biological Engineering, vol. 11, no. 1, Jan. 2018, pp. 122-8, https://ijabe.migration.pkpps03.publicknowledgeproject.org/index.php/ijabe/article/view/3114.