Guy Rosman Michael M. Bronstein Alexander M. Bronstein Ron Kimmel Nonlinear Dimensionality Reduction by Topologically Constrained Isometric Embedding. 56-68 2010 89 International Journal of Computer Vision 1 http://dx.doi.org/10.1007/s11263-010-0322-1 db/journals/ijcv/ijcv89.html#RosmanBBK10