Awaid, K., خالد, A. Hamdoun, عمار, O. Ramadan, and عمر. “Carbonization of Asphaltic Material and Polyethylene by Catalysis Oxidation V2O5 for Activated Carbon Preparation”. Journal of Education and Science (JES), vol. 17, no. 1, Jan. 2005, pp. 178-86, doi:10.33899/edusj.2005.80499.