Abou El-Seoud, Samir, and Hosam El-Sofany. “Schema Design and Normalization Algorithm for XML Databases Model”. International Journal of Emerging Technologies in Learning (iJET) 4, no. 2 (May 12, 2009): pp. 11–21. Accessed April 28, 2024. https://online-journals.org/index.php/i-jet/article/view/768.