@misc{WahlWiniwarterQuirchmayr,
  author    = {Wahl, Harald and Winiwarter, Werner and Quirchmayr, Gerald},
  title     = {Natural Language Processing Technologies for Developing a Language Learning Environment},
  subject      = {Language learning},
  language  = {en}
}
@inproceedings{WahlWiniwarterQuirchmayr,
  author    = {Wahl, Harald and Winiwarter, Werner and Quirchmayr, Gerald},
  title     = {Natural Language Processing Technologies for Developing a Language Learning Environment},
  series = {Proceddings of the 12th International Conference on Information Integration and Web-based Applications \& Services (iiWAS2010), Paris (France)},
  booktitle = {Proceddings of the 12th International Conference on Information Integration and Web-based Applications \& Services (iiWAS2010), Paris (France)},
  isbn      = {978-1-4503-0421-4},
  subject      = {Language learning},
  language  = {en}
}
@article{WahlWiniwarterQuirchmayr,
  author    = {Wahl, Harald and Winiwarter, Werner and Quirchmayr, Gerald},
  title     = {Towards an intelligent integrated language learning environment},
  series = {International Journal of Pervasive Computing and Communications},
  volume    = {2011},
  journal   = {International Journal of Pervasive Computing and Communications},
  number    = {Vol. 7 / No 3},
  pages     = {220 -- 239},
  subject      = {Language learning},
  language  = {en}
}