Wen-Syan Li K. Selçuk Candan Kyoji Hirata Yoshinori Hara Supporting efficient multimedia database exploration. 312-326 2001 9 VLDB J. 4 http://link.springer.de/link/service/journals/00778/bibs/1009004/10090312.htm db/journals/vldb/vldb9.html#LiCHH01