@article{ASENS_1955_3_72_4_401_0,
     author = {Hersch, Joseph},
     title = {Longueurs extr\'emales et g\'eom\'etrie globale},
     journal = {Annales scientifiques de l'\'Ecole Normale Sup\'erieure},
     pages = {401--414},
     publisher = {Elsevier},
     volume = {3e s{\'e}rie, 72},
     number = {4},
     year = {1955},
     doi = {10.24033/asens.1039},
     mrnumber = {18,146h},
     zbl = {0067.30701},
     language = {fr},
     url = {http://www.numdam.org/articles/10.24033/asens.1039/}
}