Takayuki Itoh Fumiyoshi Yamashita Visualization of multi-dimensional data of bioactive chemicals using a hierarchical data visualization technique "Heiankyo view". 23-29 2006 APVIS http://doi.acm.org/10.1145/1151903.1151907 conf/apvis/2006 db/conf/apvis/apvis2006.html#ItohY06