@article{ahlersboll:2007:dbspektrum,
  author = 	 {Dirk Ahlers and Susanne Boll},
  title = 	 {{Geospatially Focused Web Crawling}},
  journal   = "Datenbank-Spektrum -- Special Issue Focused Search
(Fokussierte Suche)",
  volume    = "7",
  number    = "23",
  year      = "2007",
  pages     = "3--12",
  publisher = "dpunkt.verlag",
}