@InProceedings{keizer-EtAl:2013:SIGDIAL,
  author    = {Keizer, Simon  and  Foster, Mary Ellen  and  Lemon, Oliver  and  Gaschler, Andre  and  Giuliani, Manuel},
  title     = {Training and evaluation of an MDP model for social multi-user human-robot interaction},
  booktitle = {Proceedings of the SIGDIAL 2013 Conference},
  month     = {August},
  year      = {2013},
  address   = {Metz, France},
  publisher = {Association for Computational Linguistics},
  pages     = {223--232},
  url       = {http://www.aclweb.org/anthology/W13-4036}
}