Adgidzi, D., and F. B. Akande. “COMPARISON OF THEORETICALLY DETERMINED FUEL ECONOMIC INDICES OF TRACTOR DIESEL AND CNG (ALTERNATIVE FUEL) ENGINES”. LAUTECH Journal of Engineering and Technology 3, no. 2 (February 2, 2005): 41–48. Accessed April 26, 2025. https://www.laujet.com/index.php/laujet/article/view/200.