@article{CMUC_1989__30_3_a1,
     author = {Bock, Igor and Lov{\'\i}\v{s}ek, J\'an},
     title = {Optimal control in coefficients for elliptic variational inequalities and optimality conditions},
     journal = {Commentationes Mathematicae Universitatis Carolinae},
     pages = {429--440},
     publisher = {mathdoc},
     volume = {30},
     number = {3},
     year = {1989},
     mrnumber = {1031860},
     zbl = {0687.49010},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/CMUC_1989__30_3_a1/}
}