@inproceedings{Stock91,
  author	= {Stock, O.},
  year		= {1991},
  title		= {Natural Language and the Exploration of an Information Space: the ALFresco Interactive System},
  booktitle	= {Proceedings of the International Joint Conference in Artificial Intelligence (IJCAI91)},
  pages		= {972--978},
  address	= {Sydney}
}