Carsten Röcker Carsten Magerkurth Maral Haar User Interfaces for Pervasive Games: Experiences of a Formative Multi-method Evaluation and Its Implications for System Development. 352-368 2006 conf/EUprojects/2006uaaie Universal Access in Ambient Intelligence Environments https://doi.org/10.1007/978-3-540-71025-7_23 db/conf/EUprojects/uaaie2006.html#RockerMH06