@Article{bersot1998,
  author =   {Olivier Bersot and Pierre-Olivier {El Guedj} and Christophe God\'{e}reaux and Pierre Nugues},
  title =    {A conversational agent to help navigation and collaboration in virtual worlds},
  journal =      {Virtual Reality},
  year =     {1998},
  OPTkey =   {},
  volume =   {3},
  number =   {1},
  pages =    {71--82},
  OPTmonth =     {},
  OPTnote =      {},
  OPTannote =    {}
}