Al-Ghannam, Khalid, and Mayada Mahmood. “Charging of Oil Components by Caustic Soda to Prepare Activated Charcoal”. Journal of Education and Science (JES) 18, no. 1 (January 1, 2006): 34–43. Accessed August 6, 2025. https://ojs.uomosul.edu.iq/index.php/edusj/article/view/23421.