Florian Georg Furtmüller Stefan Oppl A Tuple-Space Based Middleware for Collaborative Tangible User Interfaces. 418-423 2007 conf/wetice/2007 WETICE http://doi.ieeecomputersociety.org/10.1109/WETICE.2007.114 db/conf/wetice/wetice2007.html#FurtmullerO07