@article{CMUC_1980__21_2_a3,
     author = {Haslinger, Jaroslav and Lov{\'\i}\v{s}ek, J\'an},
     title = {Mixed variational formulation of unilateral problems},
     journal = {Commentationes Mathematicae Universitatis Carolinae},
     pages = {231--246},
     publisher = {mathdoc},
     volume = {21},
     number = {2},
     year = {1980},
     mrnumber = {580680},
     zbl = {0428.65060},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/CMUC_1980__21_2_a3/}
}