Mohar09'

BibTeX

@article{DBLP:journals/jct/Mohar09,
  author    = {Bojan Mohar},
  title     = {On the sum of k largest eigenvalues of graphs and symmetric
               matrices},
  journal   = {J. Comb. Theory, Ser. B},
  volume    = {99},
  number    = {2},
  year      = {2009},
  pages     = {306-313},
  ee        = {http://dx.doi.org/10.1016/j.jctb.2008.07.001},
  bibsource = {DBLP, http://dblp.uni-trier.de}
}