Hideki Kashioka Susumu Akamine Takafumi Nakanishi Hisashi Miyamori Koji Zettsu Yutaka Kidawara Satoshi Nakamura Spoken Dialog System for Next Generation Knowledge Access. 225-226 2008 MDM http://doi.ieeecomputersociety.org/10.1109/MDM.2008.37 conf/mdm/2008 db/conf/mdm/mdm2008.html#KashiokaANMZKN08