Ayaka Ito Ken Saito Yoshinori Takeuchi Noboru Ohnishi Shigeyoshi Iizuka Shinya Nakajima A Study on Demonstrative Words Extraction in Instructor Utterance on Communication Support for Hearing Impaired Persons. 632-639 2008 ICCHP http://dx.doi.org/10.1007/978-3-540-70540-6_90 conf/icchp/2008 db/conf/icchp/icchp2008.html#ItoSTOIN08