@article{10_37236_2735,
     author = {Pawel Wocjan and Clive Elphick},
     title = {New spectral bounds on the chromatic number encompassing all eigenvalues of the adjacency matrix},
     journal = {The electronic journal of combinatorics},
     year = {2013},
     volume = {20},
     number = {3},
     doi = {10.37236/2735},
     zbl = {1295.05112},
     url = {http://geodesic.mathdoc.fr/articles/10.37236/2735/}
}