Ashur, M. ., Bengharbia, I. و Aldulaimi, S. . (2017) "Effct of Solid Content and pH on Biogas Production From Organic Fraction Municipal Solid Waste", Solar Energy and Sustainable Development Journal, 6(1), ص 13–17. موجود في: https://jsesd-ojs.csers.ly/ojs/index.php/jsesd/article/view/51 (تاريخ الوصول: 18 مايو 2024).