Okidhika, Clinton Umebhidhi, et al. “Characterization of Water Quality Index of Well-Water at Areas of Historic Artisanal Refining Activities ”. Faculty of Natural and Applied Sciences Journal of Scientific Innovations , vol. 5, no. 1, Dec. 2023, pp. 60-73, https://fnasjournals.com/index.php/FNAS-JSI/article/view/204.