Journal, Baghdad Science. “An Approximated Solutions for Nth Order Linear Delay Integro-Differential Equations of Convolution Type Using B-Spline Functions and Weddle Method : Raghad K. Salih|Isra’a H. Hassan|Atheer J. Kadhim ”. Baghdad Science Journal 11, no. 1 (March 2, 2014): 166-177. Accessed January 20, 2021. https://bsj.uobaghdad.edu.iq/index.php/BSJ/article/view/1547.