Wen-Syan Li Quoc Vu Divyakant Agrawal Yoshinori Hara Hajime Takano PowerBookmarks: A System for Personalizable Web Information Organization, Sharing, and Management. 1375-1389 1999 31 Computer Networks 11-16 db/journals/cn/cn31.html#LiVAHT99 http://dx.doi.org/10.1016/S1389-1286(99)00032-8