@inproceedings{Cohen-etal89,
  author	= {Cohen, P. R. and Dalrymple, M. and Moran, D. and Pereira, F. and Sullivan, J. and R., Gargan Jr. and Schlossberg, J. and Tyler, S.},
  editor	= {Bice, K. and Lewis, C.},
  year		= {1989},
  title		= {Synergistic Use of Direct Manipulation and Natural Language},
  booktitle	= {Proceedings of CHI '89, (Austin, Texas, April 30 - May 4, 1989)},
  pages		= {227--233},
  publisher	= {Association of Computing Machinery},
  address	= {New York}
}