1. Complex Analysis;Ahlfors,1979
2. The correction by compact perturbation of the singular behavior of operators;Apostol;Rev. Roumaine Math. Pures Appl.,1976
3. Approximation of Hilbert Space Operators, vol. II;Apostol,1984
4. Spectra of some composition operators and some associated weighted composition operators;Bourdon;J. Operator Theory,2012
5. Riesz composition operators;Bourdon;Pacific J. Math.,1997