Guma, T. N., N. C. W. Ozoekwe, and K. V. Odita. “An Overview of Approaches and Techniques Used in Failure Analysis of Engineering System”. ARID ZONE JOURNAL OF ENGINEERING, TECHNOLOGY AND ENVIRONMENT, Vol. 16, no. 3, Sept. 2020, pp. 587-04, https://azojete.com.ng/index.php/azojete/article/view/343.