@article{10_21136_AM_1983_104056,
     author = {\v{C}erm\'ak, Libor},
     title = {A note on a discrete form of {Friedrichs'} inequality},
     journal = {Applications of Mathematics},
     pages = {457--466},
     publisher = {mathdoc},
     volume = {28},
     number = {6},
     year = {1983},
     doi = {10.21136/AM.1983.104056},
     mrnumber = {0723204},
     zbl = {0537.65073},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.21136/AM.1983.104056/}
}