Kotaro Funakoshi Satoru Watanabe Takenobu Tokunaga Naoko Kuriyama Understanding Referring Expressions Involving Perceptual Grouping. 413-420 2005 conf/cw/2005 CW http://doi.ieeecomputersociety.org/10.1109/CW.2005.93 db/conf/cw/cw2005.html#FunakoshiWTK05