@article{GDZPPN002023369,
title = {A Canonical Formalism for Multiple Integral Problems in the Calculus of Variations.},
journal = {Aequationes mathematicae},
volume = {2},
year = {1969},
pages = {44-63},
zbl = {0177.37901},
url = {http://dml.mathdoc.fr/item/GDZPPN002023369}
}
Rund, Hanno. A Canonical Formalism for Multiple Integral Problems in the Calculus of Variations.. Aequationes mathematicae, Tome 2 (1969) pp. 44-63. http://gdmltest.u-ga.fr/item/GDZPPN002023369/