@inbook{Schmidt_2003, title={Ubiquitous Interaction — Using Surfaces in Everyday Environments as Pointing Devices}, ISBN={9783540365723}, ISSN={0302-9743}, url={http://dx.doi.org/10.1007/3-540-36572-9_21}, DOI={10.1007/3-540-36572-9_21}, booktitle={Universal Access Theoretical Perspectives, Practice, and Experience}, publisher={Springer Berlin Heidelberg}, author={Schmidt, Albrecht and Strohbach, Martin and van Laerhoven, Kristof and Hans-W., Gellersen}, year={2003}, pages={263–279} }