J. AL-Nasrawy, H. H., Al-Jubor, A. K. O. and Hussain, K. A. (2020) “On The Higher-Order Pantograph Type Delay Differential Equation Via Orthonormal Bernstein Polynomials”, Journal of Al-Qadisiyah for Computer Science and Mathematics, 12(3), pp. Math Page 1– 14. doi: 10.29304/jqcm.2020.12.3.704.