Abdul R, Hakzah H, Andriyani A, Jasman J, Kasmaida K. Impact of Road Gradient on Fuel Consumption, Fuel Rate and CO₂ Emissions of Freight Transport. Astonjadro [Internet]. 2026 Mar. 4 [cited 2026 Mar. 19];15(1):284-9. Available from: http://150.107.142.43/index.php/ASTONJADRO/article/view/21234