H. A. Al-Aoh, M. Jamil Maah, R. Yahya, and M. Radzi Bin Abas, “Isotherms, Kinetics and Thermodynamics of 4-Nitrophenol Adsorption on Fiber-Based Activated Carbon from Coconut Husks Prepared Under Optimized Conditions”, ajc, vol. 25, no. 17, pp. 9573–9581, Nov. 2013.