Wankasi, D., M. Horsfall Jnr., and A. I. Spiff. “Sorption Kinetics of Pb2+and Cu2+ions from Aqueous Solution by Nipah Palm ( Nypa Fruticans Wurmb) Shoot Biomass”. Electronic Journal of Biotechnology, vol. 9, no. 5, Oct. 2006, pp. 0-0, https://www.ejbiotechnology.info/index.php/ejbiotechnology/article/view/v9n5-5.