@inproceedings{Tonhauser:01,
  author	= {Tonhauser, Judith},
  editor	= {Flickinger, Dan and Kathol, Andreas},
  title		= {{An Approach to Polarity Sensitivity and Negative Concord by Lexical Underspecification}},
  booktitle	= {{Proceedings of the 7th International HPSG Conference}},
  pages		= {285--304},
  year		= {2001},
  publisher	= {CSLI Publications},
  address	= {Stanford}
}