OlaOlorun, O., and A. Oyinloye. “Geology and Geotechnical Appraisal of Some Clay Deposits Around Ijero-Ekiti Southwestern Nigeria: Implication for Industrial Uses: Physical and Chemical Properties of Nigerian Clay”. Biological Sciences - PJSIR, vol. 53, no. 3, Apr. 2010, pp. 127-35, https://v2.pjsir.org/index.php/biological-sciences/article/view/439.