Abdulrahim, A., Highina, K. and Usman, M. (2003) “Regeneration of used lubricating oil as a source of energy”, ARID ZONE JOURNAL OF ENGINEERING, TECHNOLOGY AND ENVIRONMENT, 3, pp. 32-38. Available at: https://azojete.com.ng/index.php/azojete/article/view/310 (Accessed: 2July2022).