Saed, Usama Akram, and Noor Sabah A. Jaleel. “Adsorption of Copper Ions from Aqueous Solution Using Raw and Modified Can Papyrus: Experimental and Kinetic Study”. Al-Nahrain Journal for Engineering Sciences, vol. 20, no. 3, June 2017, pp. 744-50, https://nahje.com/index.php/main/article/view/291.