@article{M2AN_1981__15_3_265_0,
     author = {\v{Z}en{\'\i}\v{s}ek, Alexander},
     title = {Discrete forms of {Friedrichs'} inequalities in the finite element method},
     journal = {RAIRO. Analyse num\'erique},
     pages = {265--286},
     publisher = {Centrale des revues, Dunod-Gauthier-Villars},
     address = {Montreuil},
     volume = {15},
     number = {3},
     year = {1981},
     mrnumber = {631681},
     zbl = {0475.65072},
     language = {en},
     url = {http://www.numdam.org/item/M2AN_1981__15_3_265_0/}
}