Journal, B.S. 2021. Approximated Methods for Linear Delay Differential Equations Using Weighted Residual Methods: Abdul Khaliqe Ewaid Mizel. مجلة بغداد للعلوم. 4, 4 (2021), 658-665. DOI:https://doi.org/10.21123/bsj.2007.4.4.658-665.