X. Hu, N. Sun, C. Zhang, and T. Chua. CIKM '09: Proceeding of the 18th ACM conference on Information and knowledge management, page 919--928. New York, NY, USA, ACM, (2009)
L. Fu, H. Wang, H. Zhu, H. Zhang, Y. Wang, and Y. Yu. Proceedings of the 6th International Semantic Web Conference and 2nd Asian Semantic Web Conference (ISWC/ASWC2007), Busan, South Korea, volume 4825 of LNCS, page 127--140. Berlin, Heidelberg, Springer Verlag, (November 2007)
L. Fu, H. Wang, H. Zhu, H. Zhang, Y. Wang, and Y. Yu. Proceedings of the 6th International Semantic Web Conference and 2nd Asian Semantic Web Conference (ISWC/ASWC2007), Busan, South Korea, volume 4825 of LNCS, page 127--140. Berlin, Heidelberg, Springer Verlag, (November 2007)