Faisol, A., M. Mashudi, and S. Bachri. “Comparison of Several Methods for Analysis Slope Length Index Factor at A Watershed Scale”. Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering), vol. 13, no. 3, Aug. 2024, pp. 817-30, doi:10.23960/jtep-l.v13i3.817-830.