S. Harikrishnan, E.M. Elsayed, K. Kanagarajan. Existence Theory and Stability Analysis of Nonlinear Neutral Pantograph Equations via Hilfer-Katugampola Fractional Derivative. J. Adv. Appl. Computat. Math. [Internet]. 2020 Aug. 20 [cited 2025 Jul. 13];7:1-7. Available from: https://ijaet-journal.org/index.php/jaacm/article/view/850