@InProceedings{matsuyama-EtAl:2013:SIGDIAL,
  author    = {Matsuyama, Yoichi  and  Akiba, Iwao  and  Saito, Akihiro  and  Kobayashi, Tetsunori},
  title     = {A Four-Participant Group Facilitation Framework for Conversational Robots},
  booktitle = {Proceedings of the SIGDIAL 2013 Conference},
  month     = {August},
  year      = {2013},
  address   = {Metz, France},
  publisher = {Association for Computational Linguistics},
  pages     = {284--293},
  url       = {http://www.aclweb.org/anthology/W13-4043}
}