@inbook{Schmidt_1999, title={Advanced Interaction in Context}, ISBN={9783540481577}, ISSN={0302-9743}, url={http://dx.doi.org/10.1007/3-540-48157-5_10}, DOI={10.1007/3-540-48157-5_10}, booktitle={Handheld and Ubiquitous Computing}, publisher={Springer Berlin Heidelberg}, author={Schmidt, Albrecht and Aidoo, Kofi Asante and Takaluoma, Antti and Tuomela, Urpo and Van Laerhoven, Kristof and Van de Velde, Walter}, year={1999}, pages={89–101} }