%0 Journal Article %A Bertone, Simone %A Cellina, Arrigo %T On the existence of variations, possibly with pointwise gradient constraints %J ESAIM: Control, Optimisation and Calculus of Variations %D 2007 %P 331-342 %V 13 %N 2 %I EDP-Sciences %U http://www.numdam.org/articles/10.1051/cocv:2007017/ %R 10.1051/cocv:2007017 %G en %F COCV_2007__13_2_331_0