FishmanHT09'

@inproceedings{DBLP:conf/gis/FishmanHT09,
  author    = {Jeremy Fishman and
               Herman J. Haverkort and
               Laura Toma},
  title     = {Improved visibility computation on massive grid terrains},
  booktitle = {GIS},
  year      = {2009},
  pages     = {121-130},
  ee        = {http://doi.acm.org/10.1145/1653771.1653791},
  crossref  = {DBLP:conf/gis/2009},
  bibsource = {DBLP, http://dblp.uni-trier.de}
}

@proceedings{DBLP:conf/gis/2009,
  editor    = {Divyakant Agrawal and
               Walid G. Aref and
               Chang-Tien Lu and
               Mohamed F. Mokbel and
               Peter Scheuermann and
               Cyrus Shahabi and
               Ouri Wolfson},
  title     = {17th ACM SIGSPATIAL International Symposium on Advances
               in Geographic Information Systems, ACM-GIS 2009, November
               4-6, 2009, Seattle, Washington, USA, Proceedings},
  booktitle = {GIS},
  publisher = {ACM},
  year      = {2009},
  isbn      = {978-1-60558-649-6},
  bibsource = {DBLP, http://dblp.uni-trier.de}
}