Bart Hengeveld Caroline Hummels Kees Overbeeke Riny Voort Hans van Balkom Jan de Moor Let me actuate you. 159-166 2008 Tangible and Embedded Interaction http://doi.acm.org/10.1145/1347390.1347426 conf/tei/2008 db/conf/tei/tei2008.html#HengeveldHOVBM08