%0 Journal Article %A Čermák, Libor %T A note on a discrete form of Friedrichs' inequality %J Applications of Mathematics %D 1983 %P 457-466 %V 28 %N 6 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.21136/AM.1983.104056/ %R 10.21136/AM.1983.104056 %G en %F 10_21136_AM_1983_104056