Abutu, J., S. A. Lawal, R. A. Lafia-Araga, M. B. Ndaliman, and M. A. Oluleye. “Microstructure and Thermal Analysis of Brake Pads Developed from Asbestos-Free Materials”. ARID ZONE JOURNAL OF ENGINEERING, TECHNOLOGY AND ENVIRONMENT, Vol. 16, no. 2, June 2020, pp. 375-86, https://azojete.com.ng/index.php/azojete/article/view/224.