Joan M. Davis Krittaya Leelawong Kadira Belynne Gautam Biswas Nancy Vye Bobby Bodenheimer John D. Bransford Intelligent user interface design for teachable agent systems. 320 2003 conf/iui/2003 IUI http://doi.acm.org/10.1145/604045.604113 db/conf/iui/iui2003.html#DavisLBBVBB03