1. AltaVista, A/V Photo Finder, available at, http://jump.altavista.com/image.
2. AltaVista, Corbis Picture Experience, available at, http://safari.altavista.digital.com.
3. Automatic video database indexing and retrieval;Ardizzone;Multimedia Tools Appl.,1997
4. S. Arya, D. M. Mount, N. S. Netanyahu, R. Silverman, and A. Y. Wu, An optimal algorithm for approximate nearest neighbour searching in fixed dimensions, in Proc. of 5th ACM SIAM Symposium on Discrete Algorithms, 1994, pp. 573–582.
5. A visual information managment system for the interactive retrieval of faces;Bach;IEEE Trans. Knowledge Data Eng.,1993