TY - JOUR AU - Bock, Igor AU - Lovíšek, Ján TI - Optimal control in coefficients for elliptic variational inequalities and optimality conditions JO - Commentationes Mathematicae Universitatis Carolinae PY - 1989 SP - 429 EP - 440 VL - 30 IS - 3 UR - http://geodesic.mathdoc.fr/item/CMUC_1989_30_3_a1/ LA - en ID - CMUC_1989_30_3_a1 ER -