@article{10_21136_CMJ_1980_101714,
     author = {Zelinka, Bohdan},
     title = {The bichromaticity of a graph},
     journal = {Czechoslovak Mathematical Journal},
     pages = {655--660},
     publisher = {mathdoc},
     volume = {30},
     number = {4},
     year = {1980},
     doi = {10.21136/CMJ.1980.101714},
     mrnumber = {592329},
     zbl = {0477.05041},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.21136/CMJ.1980.101714/}
}