@inproceedings{ijcai2003p60,
  title     = {Information Extraction from Web Documents Based on Local Unranked Tree Automaton Inference},
  author    = {Kosala, Raymond and Bruynooghe, Maurice and Van den Bussche, Jan and Blockeel, Hendrik},
  booktitle = {Proceedings of the Eighteenth International Joint Conference on
               Artificial Intelligence, {IJCAI-03}},
  publisher = {International Joint Conferences on Artificial Intelligence},
  editor    = {Georg Gottlob},
  pages     = {403--407},
  year      = {2003},
  url       = {https://ijcai.org/proceedings/2003/60},
}