Gorimbo, Joshua, Blessing Taenzana, Kutemba Kapanji, and Linda L, Jewell. “Equilibrium Ion Exchange Studies of Ni2+ on Homoionic Forms of Clinoptilolite”. South African Journal of Science 110, no. 5/6 (May 28, 2014): 7. Accessed April 2, 2025. https://sajs.co.za/article/view/3939.