@article{10_4007_annals_2005_162_1187,
     author = {Sigurd B. Angenent},
     title = {Curve shortening and the topology of closed geodesics on surfaces},
     journal = {Annals of mathematics},
     pages = {1187--1241},
     publisher = {mathdoc},
     volume = {162},
     number = {3},
     year = {2005},
     doi = {10.4007/annals.2005.162.1187},
     mrnumber = {2179729},
     zbl = {1137.53330},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4007/annals.2005.162.1187/}
}