@InProceedings{huang-thint-celikyilmaz:2009:EMNLP,
  author    = {Huang, Zhiheng  and  Thint, Marcus  and  Celikyilmaz, Asli},
  title     = {Investigation of Question Classifier in Question Answering},
  booktitle = {Proceedings of the 2009 Conference on Empirical Methods in Natural Language Processing},
  month     = {August},
  year      = {2009},
  address   = {Singapore},
  publisher = {Association for Computational Linguistics},
  pages     = {543--550},
  url       = {http://www.aclweb.org/anthology/D/D09/D09-1057}
}