Ismail, Kais, and Thamir Abdul Hafedh. “ON THE WAVELET METHODS TO SOLVE PERTURBATION BOUNDARY VALUE ROBLEMS”. Journal of Education and Science (JES) 21, no. 1 (March 1, 2008): 90–102. Accessed August 6, 2025. https://ojs.uomosul.edu.iq/index.php/edusj/article/view/23288.