G. Mori, S. Belongie, and J. Malik. Computer Vision and Pattern Recognition, 2001. CVPR 2001. Proceedings
of the 2001 IEEE Computer Society Conf. on, 1, page I----723----I----730 vol.1. (2001)
S. Barrett, and W. Langdon. Applications of Soft Computing: Recent Trends, page 99--110. On the World Wide Web, Springer, (19 September - 7 October 2005 2006)