LiL07'

BibTeX

@article{DBLP:journals/dm/LiL07,
  author    = {Zhaoxiang Li and
               Yanpei Liu},
  title     = {Chromatic sums of general maps on the sphere and the projective
               plane},
  journal   = {Discrete Mathematics},
  volume    = {307},
  number    = {1},
  year      = {2007},
  pages     = {78-87},
  ee        = {http://dx.doi.org/10.1016/j.disc.2006.05.039},
  bibsource = {DBLP, http://dblp.uni-trier.de}
}