@inproceedings{Paris-etal01-hci,
  author	= {Paris, C. and Tarby, J. and Linden, Keith Vander},
  title		= {A Flexible Environment for Building Task Models},
  booktitle	= {Proceedings of Human Computer Interaction conference HCI 2001},
  year		= {2001},
  address	= {Lille, France}
}