Wekulo, S. F. “Evaluation of Land Use/Land Cover Change With Time in Assessing Soil Erosion Risk in Isiukhu River Catchment, Kakamega County, Kenya”. American Scientific Research Journal for Engineering, Technology, and Sciences, vol. 33, no. 1, June 2017, pp. 76-99, https://asrjetsjournal.org/index.php/American_Scientific_Journal/article/view/3104.