Wang, Quanyu, et al. “Design and Experiment of the Ditching Device for Wheat Seeders Capable of Ditching Sloped Drainage Furrows in Rice-Wheat Rotation Areas”. International Journal of Agricultural and Biological Engineering, vol. 18, no. 1, Mar. 2025, pp. 154-6, https://www.ijabe.migration.pkpps06.publicknowledgeproject.org/index.php/ijabe/article/view/8934.