@article{ARM_2004__40_3_a2,
     author = {Alonso-Blanco, R. J. and Mu\~noz-D{\'\i}az, J.},
     title = {The contact system for $A$-jet manifolds},
     journal = {Archivum mathematicum},
     pages = {233--248},
     publisher = {mathdoc},
     volume = {40},
     number = {3},
     year = {2004},
     mrnumber = {2107018},
     zbl = {1112.58002},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/ARM_2004__40_3_a2/}
}