@article{AM2_1975__12_136494,
     author = {Hanno Rund},
     title = {Conservation {Criteria,} {Canonical} {Transformations,} and {Integral} {Invariants} in the {Field} {Theory} of {Carath\'eodory} for {Multiple} {Integral} {Variational} {Problems.} {(Short} {Communication).}},
     journal = {Aequationes mathematicae},
     pages = {113--114},
     publisher = {mathdoc},
     volume = {12},
     year = {1975},
     zbl = {0317.49006},
     url = {http://geodesic.mathdoc.fr/item/AM2_1975__12_136494/}
}