Abou El-Seoud, Samir, Hosam El-Sofany, Fayed Ghaleb, Sameh Daoud, Jihad AL Ja’am, and Ahmad Hasna. “XML and Databases for E-Learning Applications”. International Journal of Emerging Technologies in Learning (iJET) 2, no. 4 (October 28, 2007). Accessed November 24, 2024. https://online-journals.org/index.php/i-jet/article/view/190.