Mina Akaishi Taizo Yamada Tetsuya Ishikawa Koichi Hori Multiple Visualizations of the Personal Promotion Histories of Court Nobles in Japan. 572-576 2009 IV http://dx.doi.org/10.1109/IV.2009.46 conf/iv/2009 db/conf/iv/iv2009.html#AkaishiYIH09