Lami M, Chimdessa M. Biogas Production from Co-Digestion of Poultry Manure and Orange Peel through Thermal Pre-Treatments in Batch Fermentation. ASRJETS-Journal. 2017;38(2):226-246. Accessed September 19, 2025. https://asrjetsjournal.org/American_Scientific_Journal/article/view/3563