Li, W.-S.; Vu, Q.; Chang, E.; Agrawal, D.; Hirata, K.; Mukherjea, S.; Wu, Y.-L.; Bufi, C.; Chang, C.-C. K.; Hara, Y.; Ito, R.; Kimura, Y.; Shimazu, K. & Saito, Y. (1999), PowerBookmarks: a system for personalizable Web information organization, sharing, and management, in 'SIGMOD '99: Proceedings of the 1999 ACM SIGMOD international conference on Management of data' , ACM Press, New York, NY, USA , pp. 565--567 .