Takaaki Hasegawa Takefumi Yamazaki Yoshihiko Hayashi SummaryBIFF: An E-mail Summarizer for Mobile Phones. 761-762 2001 conf/nlprs/2001 NLPRS http://www.afnlp.org/nlprs2001/pdf/exh-01-01.pdf db/conf/nlprs/nlprs2001.html#HasegawaYH01