Beibei, Zhou, et al. “Optimal Disc Tension Infiltrometer Estimation Techniques for Hydraulic Properties of Soil under Different Land Uses”. International Journal of Agricultural and Biological Engineering, vol. 9, no. 4, July 2016, pp. 92-98, https://www.ijabe.migration.pkpps06.publicknowledgeproject.org/index.php/ijabe/article/view/2161.