@article{EXMATH_2006_2006_1_a9,
     author = {Kurek, Jan and Mikulski, Wlodzimierz M.},
     title = {Estructuras simpl\'ecticas can\'onicas en el haz tangente de orden r de una variedad simpl\'ectica.},
     journal = {Extracta mathematicae},
     pages = {159-166},
     publisher = {mathdoc},
     volume = {21},
     number = {2},
     year = {2006},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/EXMATH_2006_2006_1_a9/}
}