@article{GDZPPN002025493,
title = {A Solution of the 'Converse Canonical Problem' for Multiple Integrals in the Calculus of Variations},
journal = {Aequationes mathematicae},
volume = {7},
year = {1971},
pages = {288-305},
zbl = {0223.49017},
url = {http://dml.mathdoc.fr/item/GDZPPN002025493}
}
LIPSHITZ, S.P. A Solution of the 'Converse Canonical Problem' for Multiple Integrals in the Calculus of Variations. Aequationes mathematicae, Tome 7 (1971) pp. 288-305. http://gdmltest.u-ga.fr/item/GDZPPN002025493/