@article{01393064,
title = {Variational problems with pointwise constraints on the derivatives.},
journal = {Journal of Convex Analysis},
volume = {6},
year = {1999},
pages = {215-233},
zbl = {0966.35054},
language = {en},
url = {http://dml.mathdoc.fr/item/01393064}
}
Molle, Riccardo; Passaseo, Donato. Variational problems with pointwise constraints on the derivatives.. Journal of Convex Analysis, Tome 6 (1999) pp. 215-233. http://gdmltest.u-ga.fr/item/01393064/