Hua, Y., Zejun, T., Zhen, X., Dingneng, G., & Haoxing, H. (2016). Design of soil moisture distribution sensor based on high-frequency capacitance. International Journal of Agricultural and Biological Engineering, 9(3), 122–129. Retrieved from https://www.ijabe.migration.pkpps06.publicknowledgeproject.org/index.php/ijabe/article/view/2226