TY  - JOUR
AU  - Bertone, Simone
AU  - Cellina, Arrigo
TI  - On the existence of variations, possibly with pointwise gradient constraints
JO  - ESAIM: Control, Optimisation and Calculus of Variations
PY  - 2007
SP  - 331
EP  - 342
VL  - 13
IS  - 2
PB  - EDP-Sciences
UR  - http://www.numdam.org/articles/10.1051/cocv:2007017/
DO  - 10.1051/cocv:2007017
LA  - en
ID  - COCV_2007__13_2_331_0
ER  -