Li, Mingwei, Xiaomeng Xia, Longtu Zhu, Renyi Zhou, and Dongyan Huang. 2021. “Intelligent Sowing Depth Regulation System Based on Flex Sensor and Mamdani Fuzzy Model for a No-till Planter”. International Journal of Agricultural and Biological Engineering 14 (6). Beijing, China:145-52. https://www.ijabe.org/index.php/ijabe/article/view/5939.