A. Ayati, A. Zeraatkar Moghaddam, B. Tanhaei, F. Deymeh, and M. Sillanpaa, “Response surface methodology approach for optimization of methyl orange adsorptive removal by magnetic chitosan nanocomposite”, Maced. J. Chem. Chem. Eng., vol. 36, no. 1, pp. 143–151, May 2017.