@InProceedings{petasis-EtAl:2001:ACL,
  author    = {Georgios Petasis  and  Frantz Vichot  and  Francis Wolinski  and  Georgios Paliouras  and  Vangelis Karkaletsis  and  Constantine D. Spyropoulos},
  title     = {Using Machine Learning to Maintain Rule-based Named-Entity Recognition and Classification Systems},
  booktitle = {Proceedings of 39th Annual Meeting of the Association for Computational Linguistics},
  month     = {July},
  year      = {2001},
  address   = {Toulouse, France},
  publisher = {Association for Computational Linguistics},
  pages     = {426--433},
  url       = {http://www.aclweb.org/anthology/P01-1055},
  doi       = {10.3115/1073012.1073067}
}