@incollection{XUPS_1994____93_0,
     author = {Patrice Le Calvez},
     title = {Du billard convexe aux~g\'eod\'esiques~du~tore},
     booktitle = {Aspects des syst\`emes dynamiques (des \'equations diff\'erentielles aux it\'erations de fonctions)},
     series = {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 = {https://proceedings.centre-mersenne.org/articles/10.5802/xups.1994-04/}
}