@ARTICLE{Boehme-RAS-2003,
author = {Boehme, Hans-Joachim and Wilhelm, Torsten and Key, Juergen and Schauer,
Carsten and Schroeter, {\relax Ch}ristof and Gross, Horst-Michael
and Hempel, Torsten},
title = {An Approach to Multi-Modal Human-Machine Interaction for Intelligent
Service Robots},
journal = {Robotics and Autonomous Systems (RAS)},
year = {2003},
volume = {44},
pages = {83--96}
}