@article{M2AN_1972__6_1_88_0,
     author = {Tomescu, Ioan},
     title = {Br\`eve communication. {Une} caract\'erisation des graphes $k$-chromatiques minimaux sans sommet isol\'e},
     journal = {ESAIM: Mathematical Modelling and Numerical Analysis },
     pages = {88--91},
     publisher = {Dunod},
     address = {Paris},
     volume = {6},
     number = {R1},
     year = {1972},
     mrnumber = {314676},
     zbl = {0239.05116},
     language = {fr},
     url = {http://geodesic.mathdoc.fr/item/M2AN_1972__6_1_88_0/}
}