Farah Amer, Qasim Mohammed Hussein, and Mohammed Sahib Mahdi Altaei. “Retrieving E-Learning Document Using Encrypted Semantic Words”. Journal of Madenat Alelem University College 14, no. 3 (September 30, 2022): 17-23. Accessed January 29, 2023. https://journal.mauc.edu.iq/index.php/JMAUC/article/view/454.