A. A. Baba, F. A. Adekola and A. J. Lawal, “Investigation of Chemical and Microbial Leaching of Iron Ore in Sulphuric Acid,” Journal of Applied Sciences and Environmental Management, Vol. 11, No. 1, 2007, pp. 39-44.
 A. A. Baba, F. A. Adekola, and A. O. Folashade, “Quatitative Leaching of a Nigerian Iron ore in Hydrochloric acid,” Journal of Applied Sciences and Environmental Management, Vol. 9, No. 3, 2005, pp. 15-20.
 A. A. Baba, A. A. Folahan, A. A. Olayide, I. Lateef, B. B. Rafiu, K. G. Malay and R. S. Abdul, “Simultaneous Recovery of Total Iron and Titanium from Ilmenite Ore by Hydrometallurgical Processing,” Metallurgical and Materials Engineering, Vol. 18, No. 1, 2012, pp. 67-78.
 G. Gülfen, M. Gülfen and A. O. Aydam, “Dissolution Kinetics of Iron from Diasporic Bauxite in Hydrochloric Acid Solution,” Indian Journal of Chemical Technology, Vol. 13, No. 4, 2006, pp. 386-390.
 A. Martinez-Luévanos, M. G. Rodriguez-Delgado, A. Uribe-Salas, F. R. Carrillo-Pedroza and J. G. Osuna-Alarcon, “Leaching Kinetic of Iron from Low-Grade Kaolin by Oxalic Acid Solutions,” Applied Clay Science, Vol. 51, No. 4, 2011, pp. 473-477. doi:10.1016/j.clay.2011.01.011
 H. Su, H. Liu, F. Wang, X. Lu and Y. Wen, “Kinetics of Reductive Leaching of Low-Grade Pyrolusite with Molasses Alcohol Wastewater in H2SO4,” Chinese Journal of Chemical Engineering, Vol. 18, No. 5, 2010, pp. 730-735.