Hsinchun Chen Howard D. Wactlar Ching-chih Chen Ee-Peng Lim Michael G. Christel ACM/IEEE Joint Conference on Digital Libraries, JCDL 2004, Tuscon, AZ, USA, June 7-11, 2004, Proceedings JCDL ACM 2004 1-58113-832-6 db/conf/jcdl/jcdl2004.html