%0 Journal Article %A Casas, Eduardo %T Necessary and sufficient optimality conditions for elliptic control problems with finitely many pointwise state constraints %J ESAIM: Control, Optimisation and Calculus of Variations %D 2008 %P 575-589 %V 14 %N 3 %I EDP-Sciences %U http://archive.numdam.org/articles/10.1051/cocv:2007063/ %R 10.1051/cocv:2007063 %G en %F COCV_2008__14_3_575_0