@article{XUPS_1994____93_0,
     author = {Le Calvez, Patrice},
     title = {Du billard convexe aux~g\'eod\'esiques~du~tore},
     journal = {Journ\'ees math\'ematiques X-UPS},
     pages = {93--140},
     publisher = {Les \'Editions de l{\textquoteright}\'Ecole polytechnique},
     year = {1994},
     doi = {10.5802/xups.1994-04},
     language = {fr},
     url = {http://geodesic.mathdoc.fr/articles/10.5802/xups.1994-04/}
}