Ibrahim Gamiye Bouh, Md. Zahangir Alam, Nassereldeen Ahmed Kabbashi, and Amina Mohamed Ali, “Enhancement of Biogas Production from Sewage Sludge by Biofilm Pretreatment Method”, J. Adv. Res. Fluid Mech. Therm. Sc., vol. 57, no. 2, pp. 141–147, Mar. 2024.