T. Y. L. HO, V. S. NGUYEN, Q. M. VO, and M. S. NGUYEN, “ADSORPTION EQUILIBRIUM STUDIES OF URANIUM (VI) ONTO CROSS-LINKED CHITOSAN-CITRIC ACID”, Nucl. Sci. and Tech., vol. 2, no. 2, pp. 14-21, Jun. 2012.