Boundary Value Problems of Hadamard Fractional Differential Equations of Variable Order. - Snezhana G. Hristova; Amar Benkerrouche; Mohammed Said Souid; Ali Hakem (Symmetry, 2021)

Multiterm Impulsive Caputo-Hadamard Type Differential Equations of Fractional Variable Order. - Amar Benkerrouche; Mohammed Said Souid; Gani Tr. Stamov; Ivanka M. Stamova (Axioms, 2022)

On the Solutions of a Quadratic Integral Equation of the Urysohn Type of Fractional Variable Order. - Amar Benkerrouche; Mohammed Said Souid; Gani Tr. Stamov; Ivanka M. Stamova (Entropy, 2022)

Boundary-Value Problem for Nonlinear Fractional Differential Equations of Variable Order with Finite Delay via Kuratowski Measure of Noncompactness. - Benoumran Telli; Mohammed Said Souid; Ivanka M. Stamova (Axioms, 2023)

Existence and Uniqueness Theorems for a Variable-Order Fractional Differential Equation with Delay. - Benoumran Telli; Mohammed Said Souid; Jehad O. Alzabut; Hasib Khan (Axioms, 2023)

Problem Involving the Riemann-Liouville Derivative and Implicit Variable-Order Nonlinear Fractional Differential Equations. - Zoubida Bouazza; Mohammed Said Souid; Hatira Günerhan; Ali Shokri 002 (Complex., 2024)

New Results Achieved for Fractional Differential Equations with Riemann-Liouville Derivatives of Nonlinear Variable Order. - Hallouz Abdelhamid; Gani Tr. Stamov; Mohammed Said Souid; Ivanka M. Stamova (Axioms, 2024)