Ajao, J.O., A.A. Adeleke, and K.E. Oluwabunmi. 2012. “Studies on the Three-Stage Dilute Hydrochloric Acid Oven Leaching of a Low Grade Iron Ore”. Ife Journal of Technology 21 (2), 15-19. http://ijt.oauife.edu.ng/index.php/ijt/article/view/102.