@incollection{
year={2011},
isbn={978-3-642-23973-1},
booktitle={Intelligent Virtual Agents},
volume={6895},
series={Lecture Notes in Computer Science},
editor={Vilhjálmsson, HannesHögni and Kopp, Stefan and Marsella, Stacy and Thórisson, KristinnR.},
doi={10.1007/978-3-642-23974-8_39},
title={Perception of Spatial Relations and of Coexistence with Virtual Agents},
url={http://dx.doi.org/10.1007/978-3-642-23974-8_39},
publisher={Springer Berlin Heidelberg},
keywords={Augmented Reality; Immersive Virtual Reality; Virtual Agents},
author={Obaid, Mohammad and Niewiadomski, Radosław and Pelachaud, Catherine},
pages={363-369}
}