@article{10_21136_AM_1977_103701,
     author = {Hlav\'a\v{c}ek, Ivan},
     title = {Dual finite element analysis for elliptic problems with obstacles on the boundary. {I}},
     journal = {Applications of Mathematics},
     pages = {244--255},
     publisher = {mathdoc},
     volume = {22},
     number = {4},
     year = {1977},
     doi = {10.21136/AM.1977.103701},
     mrnumber = {0440958},
     zbl = {0422.65065},
     language = {en},
     url = {https://geodesic-test.mathdoc.fr/articles/10.21136/AM.1977.103701/}
}