@article{M2AN_1967__1_5_129_0,
     author = {Roy, B.},
     title = {Nombre chromatique et plus longs chemins d'un graphe},
     journal = {ESAIM: Mathematical Modelling and Numerical Analysis },
     pages = {129--132},
     publisher = {Dunod},
     address = {Paris},
     volume = {1},
     number = {5},
     year = {1967},
     mrnumber = {225683},
     zbl = {0157.31302},
     language = {fr},
     url = {http://geodesic.mathdoc.fr/item/M2AN_1967__1_5_129_0/}
}