INFORMATION AND SOFTWARE TECHNOLOGY, vol. 43, no. 12, page. 743 - 743, 2001-11-01
Data Engineering, 2001. Proceedings. 17th International Conference on, page. 651 - 660, 2001-04
Proc. the 9th ACM Int'l Conf. on Information and Knowledge Management, page. 94 - 101, 2000-11
Computer Software and Applications Conference, 2000. COMPSAC 2000. The 24th Annual International, vol. 24, page. 598 - 607, 2000-10