LOKHANDE, R.S., and P.U. SlNGARE. “Comparative Study of Forward and Reverse Ion Exchange Reaction in Amberlite IRA -400 by Application of Tracer Isotope- 131I”. Asian Journal of Chemistry, vol. 10, no. 4, June 2010, pp. 890-3, https://asianpubs.org/index.php/ajchem/article/view/23744.