Hadi Ghawi, Ali. “Optimum Design of Phosphorus and Nitrogen Removal from Domestic Wastewater Treatment Plant”. International Journal of Engineering & Technology 7, no. 4.20 (November 28, 2018): 310–315. Accessed May 1, 2024. https://www.sciencepubco.com/index.php/ijet/article/view/25945.