G. Nsavyimana, S. Kaboneka, P. Bigumandondera, E. L. Ngahane, T. Ndikumana, and J. L. Vasel. “Exploring a New Approach of the Population Equivalent Concept through a Detailed Characterization of Grey and Black Waters”. International Journal of Advances in Scientific Research and Engineering (IJASRE), ISSN:2454-8006, DOI: 10.31695/IJASRE 6, no. 1 (January 23, 2020): 32–49. Accessed May 8, 2024. https://ijasre.net/index.php/ijasre/article/view/373.