@InProceedings{foster-giuliani-knoll:2009:ACLIJCNLP,
  author    = {Foster, Mary Ellen  and  Giuliani, Manuel  and  Knoll, Alois},
  title     = {Comparing Objective and Subjective Measures of Usability in a Human-Robot Dialogue System},
  booktitle = {Proceedings of the Joint Conference of the 47th Annual Meeting of the ACL and the 4th International Joint Conference on Natural Language Processing of the AFNLP},
  month     = {August},
  year      = {2009},
  address   = {Suntec, Singapore},
  publisher = {Association for Computational Linguistics},
  pages     = {879--887},
  url       = {http://www.aclweb.org/anthology/P/P09/P09-1099}
}