Mohd Khairi, D., M. A. Abas, M. F. Muhamad Said, and Wan Saiful-Islam Wan Salim. “Fuel Consumption Mathematical Models for Road Vehicle – A Review”. Progress in Energy and Environment, vol. 16, Apr. 2021, pp. 59-71, https://akademiabaru.com/submit/index.php/progee/article/view/3392.