@ARTICLE{makkonen-IR-2004,
  AUTHOR = {Juha Makkonen and Helena Ahonen-Myka and Marko Salmenkivi},
  TITLE = {Simple Semantics in Topic Detection and Tracking.},
  JOURNAL = {Information Retrieval},
  VOLUME = {7},
  YEAR = {2004},
  PAGES = {347-368},
  NUMBER = {3-4}
}

@INPROCEEDINGS{hotho-sigirws-2003,
  AUTHOR = {Andreas Hotho and Steffen Staab and Gerd Stumme},
  TITLE = {WordNet improves text document clustering},
  BOOKTITLE = {Proceedings of the Semantic Web Workshop at SIGIR-2003, 26th Annual International
        ACM SIGIT Conference, Toronto, Canada},
  YEAR = {2003}
}

@INPROCEEDINGS{bloehdorn-icdm-2004,
  AUTHOR = {Stephan Bloehdorn and Andreas Hotho},
  TITLE = {Text Classification by Boosting Weak Learners based on Terms and Concepts},
  BOOKTITLE = {Proceedings of the 4th IEEE International Conference on Data Mining (ICDM
        2004), 1-4 November 2004, Brighton, UK},
  YEAR = {2004},
  MONTH = {NOV},
  PUBLISHER = {IEEE Computer Society},
  PAGES = {331-334},
  URL = {http://csdl.computer.org/dl/proceedings/icdm/2004/2142/00/21420331.pdf}
}

@ARTICLE{hartmann-stojanovic-2005,
  AUTHOR = {Jens Hartmann and Nenad Stojanovic and Rudi Studer and Lars Schmidt-Thieme},
  TITLE = {Ontology-Based Query Refinement for Semantic Portals},
  JOURNAL = { From Integrated Publication and Information Systems to Information and Knowledge Environments},
  VOLUME = {3379 / 2005},
  NOTE = {Lecture Notes in Computer Science},
  MONTH = {JAN},
  YEAR = {2005}
}