@article{MZ_1966__94_170626,
     author = {Jean-Claude Petit},
     title = {Mesure des triangles et mesure des vecteurs \`a support parall\`eles dans une g\'eom\'etrie plane affine.},
     journal = {Mathematische Zeitschrift},
     pages = {271--306},
     publisher = {mathdoc},
     volume = {94},
     year = {1966},
     zbl = {0156.19303},
     url = {http://geodesic.mathdoc.fr/item/MZ_1966__94_170626/}
}