1. Turk, M., Pentland, A.: Eigenfaces for recognition. Journal of Cognitive Neuroscience 3, 71–86 (1991)
2. Swets, D.L., Weng, J.J.: Using discriminant eigenfeatures for image retrieval. IEEE Trans. Pattern Analysis and Machine Intelligence 18, 831–836 (1996)
3. Yan, S., He, X., Cai, D., Zhang, H.-J.: Neighborhood preserving embedding. In: IEEE International Conference on Computer Vision, ICCV 2005, vol. 2, pp. 1208–1213 (2005)
4. Han, J., Cai, D., He, X., Zhang, H.-J.: Orthogonal laplacianfaces for face recognition. IEEE Transactions on Image Processing 15, 3608–3614 (2006)
5. He, F., Kouzani, A.Z., Sammut, K.: Fractal face representation and recognition. In: IEEE International Conference on Systems, Man, and Cybernetics, vol. 2, pp. 1609–1613 (1997)