Al-Dhahabi, Ahmad AbdulKarim, and Hawraa Abbas Almurieb. “Generalized Jacobian Weighted Modulus of Smoothness”. Iraqi Journal of Science 64, no. 1 (January 30, 2023): 294–303. Accessed December 6, 2025. https://ijs.uobaghdad.edu.iq/index.php/eijs/article/view/6156.