Esraa G. Sharabya (2024) “Optimal Ratio for Anaerobic Co-Digestion of Lignocellulosic Biomass using Cow Manure and Azolla Aquatic Ferns to Enhance Biogas Production.”, The International Journal of Multiphysics, 18(3), pp. 4479 - 4495. Available at: https://themultiphysicsjournal.com/index.php/ijm/article/view/2100 (Accessed: 4April2026).