@InProceedings{boyd-zepf-meurers:2012:BEA,
  author    = {Boyd, Adriane  and  Zepf, Marion  and  Meurers, Detmar},
  title     = {Informing Determiner and Preposition Error Correction with Hierarchical Word Clustering},
  booktitle = {Proceedings of the Seventh Workshop on Building Educational Applications Using NLP},
  month     = {June},
  year      = {2012},
  address   = {Montr\'{e}al, Canada},
  publisher = {Association for Computational Linguistics},
  pages     = {208--215},
  url       = {http://www.aclweb.org/anthology/W12-2024}
}