Media type: E-Article Title: A new matrix characterization of fredholm eigenvalues of quasicircles Contributor: Kühnau, Reiner imprint: Springer Science and Business Media LLC, 2006 Published in: Journal d'Analyse Mathématique Language: English DOI: 10.1007/bf02789449 ISSN: 0021-7670; 1565-8538 Keywords: General Mathematics ; Analysis Origination: Footnote: