Andy Smith Anirudha Joshi Zhengjie Liu Liam J. Bannon Jan Gulliksen Christina Li 85-99 2007 conf/interact/2007-2 INTERACT (2) http://dx.doi.org/10.1007/978-3-540-74800-7_7 db/conf/interact/interact2007-2.html#SmithJLBGL07