@inproceedings{Benz07OL,
  author = {Benz, Dominik and Hotho, Andreas},
  title = {Position Paper: Ontology Learning from Folksonomies.},
  booktitle = {LWA 2007: Lernen - Wissen - Adaption, Halle, September 2007, Workshop Proceedings (LWA)},
  publisher = {Martin-Luther-University Halle-Wittenberg},
  year = {2007},
  pages = {109-112},
  url = {http://dblp.uni-trier.de/db/conf/lwa/lwa2007.html#BenzH07}
}

@article{heylighen98bootstrapping,
  author = {Heylighen, Francis},
  title = {Bootstrapping knowledge representations: from entailment meshes via semantic nets to learning webs},
  journal = {Kybernetes},
  year = {2001},
  volume = {30},
  number = {5/6},
  pages = {691--722},
  url = {citeseer.nj.nec.com/francis96bootstrapping.html}
}