L. Qing, W. Wang, T. Huang, and W. Gao. IEEE Pacific Rim Conference on Multimedia, volume 2532 of Lecture Notes in Computer Science, page 799-805. Springer, (2002)
S. Wang, W. Gao, T. Huang, J. Ma, J. Li, and H. Xie. Web-Age Information Management, volume 1846 of Lecture Notes in Computer Science, page 177-188. Springer, (2000)
S. Wang, W. Gao, J. Li, T. Huang, and H. Xie. Web-Age Information Management, volume 1846 of Lecture Notes in Computer Science, page 227-232. Springer, (2000)