@article{ARM_2011__47_5_a6,
     author = {Palese, Marcella and Winterroth, Ekkehart and Garrone, E.},
     title = {Second variational derivative of local variational problems and conservation laws},
     journal = {Archivum mathematicum},
     pages = {395--403},
     publisher = {mathdoc},
     volume = {47},
     number = {5},
     year = {2011},
     mrnumber = {2876943},
     zbl = {1265.58008},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/ARM_2011__47_5_a6/}
}