A. Khalil, R., رافد, M. C. Younis, and محمد. “Image Compression Technique Using a Hierarchical Neural Network”. AL-Rafidain Journal of Computer Sciences and Mathematics, vol. 3, no. 2, June 2025, pp. 99-112, https://rjps.uomosul.edu.iq/index.php/csmj/article/view/19348.