@article{ARM_2001__37_4_a5,
     author = {Mu\~noz, J. and Muriel, F. J. and Rodr{\'\i}guez, J.},
     title = {The contact system on the $(m, \ell )$-jet spaces},
     journal = {Archivum mathematicum},
     pages = {291--300},
     publisher = {mathdoc},
     volume = {37},
     number = {4},
     year = {2001},
     mrnumber = {1879452},
     zbl = {1090.58006},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/ARM_2001__37_4_a5/}
}