@InProceedings{tao-EtAl:2006:HLT-NAACL06-Main,
  author    = {Tao, Tao  and  Wang, Xuanhui  and  Mei, Qiaozhu  and  Zhai, ChengXiang},
  title     = {Language Model Information Retrieval with Document Expansion},
  booktitle = {Proceedings of the Human Language Technology Conference of the NAACL, Main Conference},
  month     = {June},
  year      = {2006},
  address   = {New York City, USA},
  publisher = {Association for Computational Linguistics},
  pages     = {407--414},
  url       = {http://www.aclweb.org/anthology/N/N06/N06-1052}
}