@InProceedings{kirschner-bernardi:2009:SRWS,
  author    = {Kirschner, Manuel  and  Bernardi, Raffaella},
  title     = {Exploring Topic Continuation Follow-up Questions using Machine Learning},
  booktitle = {Proceedings of Human Language Technologies: The 2009 Annual Conference of the North American Chapter of the Association for Computational Linguistics, Companion Volume: Student Research Workshop and Doctoral Consortium},
  month     = {June},
  year      = {2009},
  address   = {Boulder, Colorado},
  publisher = {Association for Computational Linguistics},
  pages     = {13--18},
  url       = {http://www.aclweb.org/anthology/N/N09/N09-3003}
}