Islam, M. F., D. A. Begum, M. M. Rahman, and M. S. Rahman. “Extractive Separation of Al(III) and Ni(II) by Di-2-Ethylhexyl Phosphoric Acid -Kerosene System from Aqueous Fluoride Medium: Extractive Separation of Al(III) and Ni(II)”. Biological Sciences - PJSIR, vol. 52, no. 2, Apr. 2009, pp. 59-65, https://v2.pjsir.org/index.php/biological-sciences/article/view/513.