Bousiou, C., S. Mitropoulos, C. Moschovitis, and P. Argyri. “Water Purity”. Open Schools Journal for Open Science 3, no. 3 (June 4, 2020). Accessed April 3, 2025. https://ejournals.epublishing.ekt.gr/index.php/openschoolsjournal/article/view/23364.