@article{EXMATH_1996_1996_1_a27,
     author = {Le\'on, Manuel de and Mart{\'\i}n de Diego, David},
     title = {Sistemas mec\'anicos no holon\'omicos en fibrados {J.}},
     journal = {Extracta mathematicae},
     pages = {127-139},
     publisher = {mathdoc},
     volume = {11},
     number = {1},
     year = {1996},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/EXMATH_1996_1996_1_a27/}
}