Ayawei, N., A. T. Ekubo, D. Wankasi, and E. D. Dikio. 2015. “Equilibrium, Thermodynamic and Kinetic Studies of the Adsorption of Lead(II) on Ni/Fe Layered Double Hydroxide”. Asian Journal of Applied Sciences 3 (2). https://ajouronline.com/index.php/AJAS/article/view/2369.