@article{DMGT_2015_35_4_a13,
     author = {Elphick, Clive and Wocjan, Pawel},
     title = {Unified {Spectral} {Bounds} on the {Chromatic} {Number}},
     journal = {Discussiones Mathematicae. Graph Theory},
     pages = {773--780},
     publisher = {mathdoc},
     volume = {35},
     number = {4},
     year = {2015},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/DMGT_2015_35_4_a13/}
}