Shafini Mohd Shafie, A Harits Nu’man, and Nik Nurul Anis Nik Yusuf. “Biogas to Fuel Cell State of the Art: A Review”. Journal of Advanced Research in Fluid Mechanics and Thermal Sciences 86, no. 1 (March 28, 2024): 87–104. Accessed November 24, 2024. https://semarakilmu.com.my/journals/index.php/fluid_mechanics_thermal_sciences/article/view/8142.