%0 Journal Article %A Bock, Igor %A Lovíšek, Ján %T Optimal control in coefficients for elliptic variational inequalities and optimality conditions %J Commentationes Mathematicae Universitatis Carolinae %D 1989 %P 429-440 %V 30 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/CMUC_1989__30_3_a1/ %G en %F CMUC_1989__30_3_a1