Author = El-Sayed, Ahmed M. A.
On the Pantograph functional equation

Volume 12, Issue 1, January 2024, Pages 1-12

Malak Ba-Ali; Ahmed M. A. El-Sayed; Eman Hamdallah


On the dynamics of a Riccati differential equation with perturbed delay

Volume 11, Issue 2, July 2023, Pages 1-14

Ahmed M. A. El-Sayed; Sanaa M. Salman; AbdAllah A. F. AbdElfattah