@article{Walker-etal87,
  author	= {Walker, Donald E. and Zampolli, Antonio and Calzolari, Nicoletta},
  month		= julsep,
  year		= {1987},
  title		= {Special Issue of the Lexicon},
  journal	= {Computational Lingusitics},
  volume	= {13},
  number	= {3-4}
}