The Spectrum and the Numerical Range of the Product of Finite Numbers of Automorphic Composition Operators on Hardy Space 2. Iraqi Journal of Science [Internet]. 2023 Feb. 22 [cited 2024 Nov. 17];56(4A):2966-71. Available from: https://ijs.uobaghdad.edu.iq/index.php/eijs/article/view/9534