@inbook{sharma96:book,
  editor = {C. A. Ntuen and E. H. Park},
  chapter = {A multimodal framework for interacting with complex virtual
             environments},
  title = {Human Interaction with Complex Systems},
  author = {Rajeev Sharma and Thomas S. Huang and Vladimir Pavlovic},
  publisher = {Kluwer Academic Publishers},
  pages = {53-71},
  year = 1996,
}