Olaoye, R. A., S. O. Ojoawo, J. R. Oluremi, and A. D. Yusuf. “PILOT STUDY ON LOW COST DOMESTIC SLOW SAND FILTER FOR GROUNDWATER QUALITY IMPROVEMENT”. LAUTECH Journal of Engineering and Technology, vol. 12, no. 1, Mar. 2018, pp. 43-52, https://www.laujet.com/index.php/laujet/article/view/214.