ITI 2003 : poster abstracts of the 25th International conference on information technology interfaces : Silver Interfaces : Computer at the University, June 7-10, 2003, Cavtat, Croatia : editors Leo Budin, Vesna Lužar-Stiffler, Vesna Hljuz Dobrić - Budin, Leo (University of Zagreb, SRCE University Computing Center, 2003)