Dang, Lanh, and Son Nguyen. “Determination of Inorganic Exchange Efficiency of Rubidium, Cesium, and Barium”. Science and Technology Development Journal 19, no. 4 (December 31, 2016): 117-125. Accessed April 30, 2024. http://stdj.scienceandtechnology.com.vn/index.php/stdj/article/view/603.