Nik Robidin, N.A.D. and Shaiful Fadzil Zainal Abidin (2024) “Experimental Investigation on a Fuel Efficiency and its Emission of CI Engine Using Higher Blend Biodiesel”, Progress in Engineering Application and Technology, 5(2), pp. 356–366. Available at: https://penerbit.uthm.edu.my/periodicals/index.php/peat/article/view/17288 (Accessed: 7 April 2026).