@article{DBLP:journals/jal/ChenKJ01,
  author    = {Jianer Chen and
               Iyad A. Kanj and
               Weijia Jia},
  title     = {Vertex Cover: Further Observations and Further Improvements},
  journal   = {J. Algorithms},
  volume    = {41},
  number    = {2},
  year      = {2001},
  pages     = {280-301},
  ee        = {http://dx.doi.org/10.1006/jagm.2001.1186},
  bibsource = {DBLP, http://dblp.uni-trier.de}
}