Wisam A. Alawadi, Samar A. Al-khafaji, and Wisam S. Al‑Rekabi. “The Effectiveness of Up-Flow Anaerobic Sludge Blanket for Treating Industrial Sewage: A Brief Review”. Eurasian Journal of Engineering and Technology, vol. 20, July 2023, pp. 18-23, https://geniusjournals.org/index.php/ejet/article/view/4684.