H. Tedjani, A., M. M. Abdelwahab, and M. A. Abdelkawy. “AN EFFICIENT SCHEME TO SOLVE FOURTH ORDER NONLINEAR TRIPLY SINGULAR FUNCTIONAL DIFFERENTIAL EQUATION”. Advances in Differential Equations and Control Processes, Vol. 31, no. 1, Feb. 2024, https://ojs.acad-pub.com/index.php/ADECP/article/view/2426.