@article{DMTCS_2001_4_2_a4,
     author = {Ho\`ang, Chinh T. and Le, Van Bang},
     title = {P_4-Colorings and {P_4-Bipartite} {Graphs}},
     journal = {Discrete mathematics & theoretical computer science},
     publisher = {mathdoc},
     volume = {4},
     number = {2},
     year = {2000-2001},
     doi = {10.46298/dmtcs.272},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.46298/dmtcs.272/}
}