Zeeshan A. Hameed, Junaid Saleem, Hira Lal, Ahsan Abdul Ghani, and Muhammad Shoaib. “Effect of Acid Treatment on the Recovery of Valuable Metals from Steel Plant Exhaust”. Journal of Basic & Applied Sciences 12 (January 5, 2016): 323–328. Accessed February 23, 2025. http://sceintific-array.org/index.php/jbas/article/view/1532.