BittnerH01'

@article{DBLP:journals/jvca/BittnerH01,
  author    = {Jir\'{\i} Bittner and
               Vlastimil Havran},
  title     = {Exploiting coherence in hierarchical visibility algorithms},
  journal   = {Journal of Visualization and Computer Animation},
  volume    = {12},
  number    = {5},
  year      = {2001},
  pages     = {277-286},
  ee        = {http://dx.doi.org/10.1002/vis.269},
  bibsource = {DBLP, http://dblp.uni-trier.de}
}