N. Ayawei, N.A. Ebelegi, S.S. Angaye, and D. Wankasi. 2017. “Adsorption of Congo Red a Basic Dye by Zn/Fe-CO3”. International Journal of Research in Chemistry and Environment (IJRCE) 7 (3):18-26. https://ijrce.org/index.php/ijrce/article/view/216.