Al-Humedi, H.O. and Shoushan, A.F. 2021. Numerical Solutions of Mixed Integro-Differential Equations by Least-Squares Method and Laguerre Polynomial. Earthline Journal of Mathematical Sciences. 6, 2 (Apr. 2021), 309-323. DOI:https://doi.org/10.34198/ejms.6221.309323.