%0 Journal Article %A Zelinka, Bohdan %T The bichromaticity of a graph %J Czechoslovak Mathematical Journal %D 1980 %P 655-660 %V 30 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.21136/CMJ.1980.101714/ %R 10.21136/CMJ.1980.101714 %G en %F 10_21136_CMJ_1980_101714