Tharmalingam Gunasekar, Jaya Priya Dhanasekar, N. Anakira, Osama Ogilat, and A. Sheimat, “Variable-Order Fractional Differential Equations: Existence, Stability, and Application to 3D Noise Evolution”, Stat., optim. inf. comput., vol. 16, no. 1, pp. 641–659, Jun. 2026.