@inproceedings{DBLP:conf/icdt/KuijpersB99,
  author    = {Bart Kuijpers and
               Jan Van den Bussche},
  title     = {On Capturing First-Order Topological Properties of Planar
               Spatial Databases},
  booktitle = {ICDT},
  year      = {1999},
  pages     = {187-198},
  ee        = {http://dx.doi.org/10.1007/3-540-49257-7_13},
  crossref  = {DBLP:conf/icdt/99},
  bibsource = {DBLP, http://dblp.uni-trier.de}
}

@proceedings{DBLP:conf/icdt/99,
  editor    = {Catriel Beeri and
               Peter Buneman},
  title     = {Database Theory - ICDT '99, 7th International Conference,
               Jerusalem, Israel, January 10-12, 1999, Proceedings},
  booktitle = {ICDT},
  publisher = {Springer},
  series    = {Lecture Notes in Computer Science},
  volume    = {1540},
  year      = {1999},
  isbn      = {3-540-65452-6},
  bibsource = {DBLP, http://dblp.uni-trier.de}
}