@article{ARM_1978__14_4_a8,
     author = {Sade, A.},
     title = {Observations sur l'introduction d'une m\'etrique dans le plan affin},
     journal = {Archivum mathematicum},
     pages = {227--233},
     publisher = {mathdoc},
     volume = {14},
     number = {4},
     year = {1978},
     mrnumber = {512766},
     zbl = {0419.53002},
     language = {fr},
     url = {http://geodesic.mathdoc.fr/item/ARM_1978__14_4_a8/}
}