@inproceedings{ hilliges2004uic,
		author =		{Hilliges, Otmar and Sandor, Christian and Klinker, Gudrun},
		title =		{A Lightweight Approach for Experimenting with Tangible Interaction Metaphors},
		booktitle =	{Proc. of the International Workshop on Multi-user and Ubiquitous User Interfaces (MU3I)},
		year =		{2004},
}