@article{10_21136_CMJ_1963_100565,
     author = {Havelka, Josef},
     title = {Sur une g\'en\'eralisation de la normale affine},
     journal = {Czechoslovak Mathematical Journal},
     pages = {240--266},
     publisher = {mathdoc},
     volume = {13},
     number = {2},
     year = {1963},
     doi = {10.21136/CMJ.1963.100565},
     mrnumber = {0159272},
     zbl = {0119.17301},
     language = {fr},
     url = {http://geodesic.mathdoc.fr/articles/10.21136/CMJ.1963.100565/}
}