Media type: E-Article Title: Second Eigenvalue of Paneitz Operators and Mean Curvature Contributor: Chen, Daguang; Li, Haizhong Published: Springer Science and Business Media LLC, 2011 Published in: Communications in Mathematical Physics, 305 (2011) 3, Seite 555-562 Language: English DOI: 10.1007/s00220-011-1281-2 ISSN: 1432-0916; 0010-3616 Origination: Footnote: