@article{EXMATH_1996_1996_1_a34,
     author = {Sarlet, W.},
     title = {Construcci\'on geom\'etrica de la din\'amica de los sistemas lagrangianos no holon\'omicos.},
     journal = {Extracta mathematicae},
     pages = {202-212},
     year = {1996},
     volume = {11},
     number = {1},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/EXMATH_1996_1996_1_a34/}
}