Haitham Abbood, Wisam. “High Performance Technique FIR Filter Using Least Squares Method”. Journal of Engineering and Sustainable Development 12, no. 3 (September 1, 2008): 1–7. Accessed May 9, 2025. https://jeasd.uomustansiriyah.edu.iq/index.php/jeasd/article/view/1654.