@InProceedings{wachsmuth-stein-engels:2013:IJCNLP,
  author    = {Wachsmuth, Henning  and  Stein, Benno  and  Engels, Gregor},
  title     = {Learning Efficient Information Extraction on Heterogeneous Texts},
  booktitle = {Proceedings of the Sixth International Joint Conference on Natural Language Processing},
  month     = {October},
  year      = {2013},
  address   = {Nagoya, Japan},
  publisher = {Asian Federation of Natural Language Processing},
  pages     = {534--542},
  url       = {http://www.aclweb.org/anthology/I13-1061}
}