ESRAA G. SHARABYA. 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, v. 18, n. 3, p. 4479 - 4495, 30 Sep. 2024.