Media type: Electronic Conference Proceeding Title: The pole condition as transparent boundary condition for resonance problems: detection of spurious modes Contributor: Kettner, Benjamin; Schmidt, Frank Published: SPIE, 2011 Published in: SPIE Proceedings (2011) Extent: Language: Not determined DOI: 10.1117/12.874752 ISSN: 0277-786X Origination: Footnote: