Namah, Eman Mohmmed. “Variational Approximate Solutions of Fractional Delay Differential Equations With Integral Transform”. Iraqi Journal of Science 62, no. 10 (October 30, 2021): 3679–3689. Accessed January 8, 2026. https://ijs.uobaghdad.edu.iq/index.php/eijs/article/view/3854.