@article{10_21136_CPM_1987_118312,
     author = {Sokolov\'a, Marie},
     title = {The chromatic number of extended odd graphs is four},
     journal = {\v{C}asopis pro p\v{e}stov\'an{\'\i} matematiky},
     pages = {308--311},
     publisher = {mathdoc},
     volume = {112},
     number = {3},
     year = {1987},
     doi = {10.21136/CPM.1987.118312},
     mrnumber = {905977},
     zbl = {0667.05023},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.21136/CPM.1987.118312/}
}