García, Domingo, Manuel Maestre, och Ignacio Zalduendo. ”Algebras of Functions With Prescribed Radii of Boundedness and the Spectra of H(U)”. Annales Fennici Mathematici 37, no. 2 (augusti 1, 2012): 445–460. åtkomstdatum maj 20, 2024. https://afm.journal.fi/article/view/135405.