@article{Stein98-speakeval,
  author	= {Stein, Adelheit},
  year		= {1998},
  title		= {Usability and Assessments of Multimodal Interaction in the SPEAK! System: an experimental case study},
  journal	= {New Review of Multimedia and Hypermedia},
  volume	= {4},
  note		= {(Special issue on the evaluation of Information Retrieval and Multimodal systems)}
}