@article{JMPA_1948_9_27__255_0,
     author = {Alardin, F\'elix},
     title = {L{\textquoteright}autoparall\'elisme des courbes extr\'emales dans les espaces m\'etriques fond\'es sur la notion d{\textquoteright}aire},
     journal = {Journal de Math\'ematiques Pures et Appliqu\'ees},
     pages = {255--336},
     volume = {9e s{\'e}rie, 27},
     year = {1948},
     zbl = {0034.10102},
     mrnumber = {28663},
     language = {fr},
     url = {http://www.numdam.org/item/JMPA_1948_9_27__255_0/}
}