@inproceedings{TjongKimSang-DeMeulder:2003:CONLL,
  author = {Tjong Kim Sang, Erik F.  and  De Meulder, Fien},
  title  = {Introduction to the CoNLL-2003 Shared Task: Language-Independent Named Entity Recognition},
  booktitle = {Proceedings of the Seventh Conference on Natural Language Learning at HLT-NAACL 2003},
  editor = {Walter Daelemans and Miles Osborne},
  url    = {http://www.aclweb.org/anthology/W03-0419.pdf},
  year   = 2003,
  pages  = {142--147}