Ding, Tao, Lumeng Fang, Zhengxiang Shi, Baoming Li, and Yang Zhao. 2019. “Effects of Ripple Cross Angles and Turbulence Models on Wet Curtain Resistance”. International Journal of Agricultural and Biological Engineering 12 (4):43-46. https://ijabe.migration.pkpps03.publicknowledgeproject.org/index.php/ijabe/article/view/3446.