Sawyerr N, Trois C, Workneh T, Okudoh V. An Overview of Biogas Production: Fundamentals, Applications and Future Research. IJEEP [Internet]. 2019 Feb. 14 [cited 2024 Apr. 25];9(2):105-16. Available from: https://www.econjournals.com/index.php/ijeep/article/view/7375