Yahaya, Siti Hajar, Syafi'ah Nadiah Mohd Said, Mohd Azhar Zain, Mohammed Shahrir Mohamad Zahari, Noor Azrimi Umor, and Shahrul Ismail. 2021. “Performance of Food Waste Feeding Pilot Plant Biodigester Operated With Identified Potential Substrate Properties ”. International Journal of Integrated Engineering 13 (3): 20-27. https://penerbit.uthm.edu.my/ojs/index.php/ijie/article/view/6469.