@article{ARM_1993__29_3-4_a9,
     author = {Chrastina, Jan},
     title = {On the equivalence of variational problems. {II}},
     journal = {Archivum mathematicum},
     pages = {197--220},
     publisher = {mathdoc},
     volume = {29},
     number = {3-4},
     year = {1993},
     mrnumber = {1263122},
     zbl = {0821.49009},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/ARM_1993__29_3-4_a9/}
}