@article{PORMA_1987__44_2_115581,
     author = {Kumpera, Rodrigo},
     title = {Sur la g\'eom\'etrie de contact d'ordre sup\'erieur},
     journal = {Portugaliae mathematica},
     pages = {199--212},
     publisher = {mathdoc},
     volume = {44},
     number = {2},
     year = {1987},
     mrnumber = {0911442},
     zbl = {0633.53061},
     language = {fr},
     url = {http://geodesic.mathdoc.fr/item/PORMA_1987__44_2_115581/}
}