Stefano Mizzaro Elena Nazzi Luca Vassena Retrieval of context-aware applications on mobile devices: how to evaluate? 65-71 2008 IIiX http://doi.acm.org/10.1145/1414694.1414710 conf/iiix/2008 db/conf/iiix/iiix2008.html#MizzaroNV08