IBM UFO repository

Liqun Chen, Matthias Enzmann, et al.

FC 2005

Lixi Zhou, Jiaqing Chen, et al.

VLDB

Liat Ein-Dor, Y. Goldschmidt, et al.

IBM J. Res. Dev

Chi-Leung Wong, Zehra Sura, et al.

I-SPAN 2002