H. Al-Taweel, M. Ali, and K. Al-Azawi, “Separation of cobalt from spent catalyst CoMo by precipitation and Ion exchange techniques”, IHJPAS, vol. 22, no. 2, Aug. 2017, Accessed: May 01, 2025. [Online]. Available: https://www.jih.uobaghdad.edu.iq/index.php/j/article/view/1234