@article{COMIM_2011__19_2_a5,
     author = {Havelkov\'a, Monika},
     title = {A geometric analysis of dynamical systems with singular {Lagrangians}},
     journal = {Communications in Mathematics},
     pages = {169--178},
     publisher = {mathdoc},
     volume = {19},
     number = {2},
     year = {2011},
     mrnumber = {2897268},
     zbl = {1251.37052},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/COMIM_2011__19_2_a5/}
}