@InProceedings{heylen-opdenakker:2007:ACL-ELP,
  author    = {Heylen, Dirk  and  op den Akker, Rieks},
  title     = {Computing Backchannel Distributions in Multi-Party Conversations},
  booktitle = {Proceedings of the Workshop on Embodied Language Processing},
  month     = {June},
  year      = {2007},
  address   = {Prague, Czech Republic},
  publisher = {Association for Computational Linguistics},
  pages     = {17--24},
  url       = {http://www.aclweb.org/anthology/W/W07/W07-1903}
}