@ARTICLE{Wilhelm-RAS-2004,
author = {Wilhelm, Torsten and Boehme, Hans-Joachim and Gross, Horst-Michael},
title = {A Multi-Modal System for Tracking and Analyzing Faces on a Mobile
Robot},
journal = {Robotics and Autonomous Systems (RAS)},
year = {2004},
volume = {48},
pages = {31--40},
number = {1}
}