%0 Journal Article %A Ženíšek, Alexander %T Discrete forms of Friedrichs' inequalities in the finite element method %J RAIRO. Analyse numérique %D 1981 %P 265-286 %V 15 %N 3 %I Centrale des revues, Dunod-Gauthier-Villars %C Montreuil %U http://www.numdam.org/item/M2AN_1981__15_3_265_0/ %G en %F M2AN_1981__15_3_265_0