Kazmi, M., I. I. Cheema, N. Feroze, M. Rustam, and M. Zafar. “Regression Analysis on Biosorption Study of Cu(II) by Dry Fruit Wastes”. Journal of the Pakistan Institute of Chemical Engineers, vol. 42, no. 1, Aug. 2014, pp. 95-108, http://piche.org.pk/journal/index.php/jpiche/article/view/117.