1. Which linear-fractional composition operators are essentially normal?;Bourdon;J. Math. Anal. Appl.,2003
2. P.S. Bourdon, Spectra of some composition operators and associated weighted composition operators, preprint
3. Composition operators on H2;Cowen;J. Operator Theory,1983
4. Linear fractional composition operators on H2;Cowen;Integral Equations Operator Theory,1988
5. C.C. Cowen, E. Ko, Hermitian weighted composition operators on H2, Trans. Amer. Math. Soc., in press