@article{AM2_1968__1_135971,
     author = {Hanno Rund},
     title = {A {Canonical} {Formalism} for {Multiple} {Integral} {Problems} in the {Calculus} of {Variation.} {(Short} {Communication).}},
     journal = {Aequationes mathematicae},
     pages = {211--212},
     publisher = {mathdoc},
     volume = {1},
     year = {1968},
     zbl = {0293.49001},
     url = {http://geodesic.mathdoc.fr/item/AM2_1968__1_135971/}
}