Peter Fröhlich Lynne Baillie Peter Reichl Raimund Schatz Florian Hammer Georg Niklfeld The HTI lab @ ftw: user research for telecom systems. 287-290 2006 conf/chi/2006a CHI Extended Abstracts http://doi.acm.org/10.1145/1125451.1125515 db/conf/chi/chi2006a.html#FrohlichBRSHN06