IvanovO. V. (1993) “The structure of Banach algebras of bounded continuous functions on the open disk that contain $H^{∞}$, the Hoffman algebra, and nontangential limits”, Ukrains’kyi Matematychnyi Zhurnal, 45(7), pp. 924–931. Available at: https://umj.imath.kiev.ua/index.php/umj/article/view/5885 (Accessed: 27July2024).