Media type: E-Article Title: Fundamental group and contractible closed geodesics Contributor: Nabutovsky, Alexander Published: Wiley, 1996 Published in: Communications on Pure and Applied Mathematics, 49 (1996) 12, Seite 1257-1270 Language: Not determined DOI: 10.1002/(sici)1097-0312(199612)49:12<1257::aid-cpa1>3.3.co;2-5 ISSN: 0010-3640; 1097-0312 Keywords: Applied Mathematics ; General Mathematics Origination: Footnote: