Kamal, A., and T.I. Yassen. “D-Metric Spaces and Composition Operators Between Hyperbolic Weighted Family of Function Spaces”. CUBO, A Mathematical Journal 22, no. 2 (August 22, 2020): 215–231. Accessed May 10, 2024. https://www.perspectivasdelacomunicacion.cl/ojs/index.php/cubo/article/view/2364.