Fiadh, Mahmood Salim, and Mostafa Abdulghafoor Mohammed , trans. “Applications of Differential-Difference Algebra in Discrete Calculus”. Babylonian Journal of Mathematics 2023 (March 25, 2023): 12–17. Accessed July 11, 2025. https://mesopotamian.press/journals/index.php/BJM/article/view/170.