Septiyanti, Brigitta Ery, et al. “Application of Wischmeier-Smith, EPIC, M-USLE, and WEPP Methods for Determination of Erodibility Factor (K) of Soil”. Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering), vol. 12, no. 3, Sept. 2023, pp. 653-64, doi:10.23960/jtep-l.v12i3.653-664.