@book{books/aw/Baeza-YatesR99,
  author = {Ricardo A. Baeza-Yates and Berthier A. Ribeiro-Neto},
  title = {Modern Information Retrieval},
  publisher = {ACM Press / Addison-Wesley},
  year = {1999},
  url = {http://www.ischool.berkeley.edu/~hearst/irbook/glossary.html}
}

@book{ferber2003information,
  author = {Reginald Ferber},
  title = {Information Retrieval: Suchmodelle und Data-Mining-Verfahren für Textsammlungen und das Web},
  publisher = {dpunkt Verlag},
  year = {2003},
  url = {http://information-retrieval.de/}
}

@book{rijsbergen79information,
  author = {C. J. van Rijsbergen},
  title = {Information retrieval},
  publisher = {Butterworths},
  year = {1979},
  edition = {2},
  url = {http://www.dcs.gla.ac.uk/Keith/Preface.html}
}

@book{books/mk/WittenMB99,
  author = {Ian H. Witten and Alistair Moffat and Timothy C. Bell},
  title = {Managing Gigabytes: Compressing and Indexing Documents and Images, Second Edition},
  publisher = {Morgan Kaufmann},
  year = {1999},
  url = {http://www.cs.mu.oz.au/mg/}
}