%0 Journal Article %A Ben Belgacem, Hafedh %T Relaxation of singular functionals defined on Sobolev spaces %J ESAIM: Control, Optimisation and Calculus of Variations %D 2000 %P 71-85 %V 5 %I EDP-Sciences %U http://www.numdam.org/item/COCV_2000__5__71_0/ %G en %F COCV_2000__5__71_0