Garba, D. K., M. J. Muhammad, U. S. Umar, and N. C. A. Ozoekwe. “Investigation of Chemical Composition of a Steam Turbine Shaft (A Case of Kaduna Refinery)”. ARID ZONE JOURNAL OF ENGINEERING, TECHNOLOGY AND ENVIRONMENT, Vol. 16, no. 3, Sept. 2020, pp. 605-10, https://azojete.com.ng/index.php/azojete/article/view/349.