Abdullah, Jalil Talab. “Numerical Solution for Linear Fredholm Integro-Differential Equation Using Touchard Polynomials”. Baghdad Science Journal 18, no. 2 (June 1, 2021): 0330. Accessed July 28, 2021. https://bsj.uobaghdad.edu.iq/index.php/BSJ/article/view/4769.