Louakar, A.; Vivek, D.; Kajouni, A.; Hilal, K. Topological Degree Method for Stochastic Pantograph Differential Equation With Hilfer Fractional Derivative Involving Non-Instantaneous Impulses. DNC 2026, 15 (3), 315-330. https://doi.org/10.5890/DNC.2026.09.002.