M. Hamd, Murtadaha, مرتضى, Waleed K. Hassan, and ولید. “OLAP Techniques for Approximation and Mining Query Answering”. AL-Rafidain Journal of Computer Sciences and Mathematics 7, no. 3 (June 25, 2025): 201–212. Accessed August 6, 2025. https://ojs.uomosul.edu.iq/index.php/csmj/article/view/20009.