@article{DMGT_2007_27_1_a11,
     author = {Schiermeyer, Ingo},
     title = {A new upper bound for the chromatic number of a graph},
     journal = {Discussiones Mathematicae. Graph Theory},
     pages = {137--142},
     publisher = {mathdoc},
     volume = {27},
     number = {1},
     year = {2007},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/DMGT_2007_27_1_a11/}
}