%0 Journal Article %A O. Krupková %A P. Volný %T Differential equations with constraints in jet bundles: Lagrangian and Hamiltonian systems %J Lobachevskii journal of mathematics %D 2006 %P 95-150 %V 23 %I mathdoc %U http://geodesic.mathdoc.fr/item/LJM_2006_23_a4/ %G en %F LJM_2006_23_a4