I. Alsaif, Khalil, خلیل, Hadia S. Albadrani, and هدیة. 2025. “Hybrid System for Speech Coding Based on Contourlet Transformation”. AL-Rafidain Journal of Computer Sciences and Mathematics 10 (1):107-17. https://ojs.uomosul.edu.iq/index.php/csmj/article/view/19513.