@article{CMUC_1989__30_2_a9,
     author = {Quittner, Pavol},
     title = {Solvability and multiplicity results for variational inequalities},
     journal = {Commentationes Mathematicae Universitatis Carolinae},
     pages = {281--302},
     publisher = {mathdoc},
     volume = {30},
     number = {2},
     year = {1989},
     mrnumber = {1014128},
     zbl = {0698.49004},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/CMUC_1989__30_2_a9/}
}