@inproceedings{TheobaltBosChapman2002IROS,
   title     = {Talking to Godot: Dialogue with a Mobile Robot},
   author    = {Theobalt, Christian and Bos, Johan and Chapman, T. and Espinosa-Romero, A. and Fraser, Mark and Hayes, Gillian and Klein, Ewan and Oka, Tetsushi and Reeve, Richard},
   booktitle = {Proceedings of IEEE/RSJ International Conference on Intelligent Robots and Systems (IROS 2002)},
   pages     = {1338--1343},
   year      = {2002}
}