Halim, Amirul Ridzuan, and Roslinda Seswoya. “Biohydrogen Production from Acid Pre-Treated Grass”. Recent Trends in Civil Engineering and Built Environment, vol. 5, no. 1, July 2024, pp. 57-66, https://penerbit.uthm.edu.my/periodicals/index.php/rtcebe/article/view/6010.