@book{UBHD-66770947,
  author={J{\"o}st, Matthias Michael},
  title={Personalized city tours},
  subtitle={an extension of the OGC OpenLocation specification},
  year={2009},
  pages={Online-Ressource},
  language={eng},
  school={Heidelberg, Univ., Diss., 2009},
  keywords={Personalisierung / Kontext / Handy / Geoinformationssystem / Standortbezogener Dienst / Graphentheorie / XML / Ontologie / Individualtourismus},
  url={http://archiv.ub.uni-heidelberg.de/volltextserver/volltexte/2009/9768},
  library={UB},
}
@book{UBHD-66771765,
  author={J{\"o}st, Matthias Michael},
  title={Personalized city tours},
  subtitle={an extension of the OGC OpenLocation Specification},
  year={2009},
  pages={225 S.},
  language={eng},
  school={Heidelberg, Univ., Diss., 2009},
  keywords={Personalisierung / Kontext / Handy / Geoinformationssystem / Standortbezogener Dienst / Graphentheorie / XML / Ontologie / Individualtourismus},
  library={UB [Signatur: 2009 U 869]},
}
@article{UBHD-67393373,
  author={Zipf, Alexander and J{\"o}st, Matthias Michael},
  title={Implementing adaptive mobile GI services based on ontologies},
  subtitle={examples for pedestrian navigation support},
  year={2006},
  pages={784-798},
  language={eng},
  issn={0198-9715},
  volume={30},
  number={6},
  journal={Computers, environment and urban systems},
}