@article{1077492646,
author = {Hestenes, Magnus R.},
title = {An analogue of Green's theorem in the calculus of
variations},
journal = {Duke Math. J.},
volume = {8},
number = {1},
year = {1941},
pages = { 300-311},
language = {en},
url = {http://dml.mathdoc.fr/item/1077492646}
}
Hestenes, Magnus R. An analogue of Green’s theorem in the calculus of variations. Duke Math. J., Tome 8 (1941) no. 1, pp. 300-311. http://gdmltest.u-ga.fr/item/1077492646/