@InProceedings{sajjad-pantel-gamon:2012:PAPERS,
  author    = {Sajjad, Hassan  and  Pantel, Patrick  and  Gamon, Michael},
  title     = {Underspecified Query Refinement via Natural Language Question Generation},
  booktitle = {Proceedings of COLING 2012},
  month     = {December},
  year      = {2012},
  address   = {Mumbai, India},
  publisher = {The COLING 2012 Organizing Committee},
  pages     = {2341--2356},
  url       = {http://www.aclweb.org/anthology/C12-1143}
}