1. Dynamic programming treatment of the travelling salesman problem;Bellman;Journal of Association for Computing Machinery,1962
2. Collignon, A., 1998. Multi-modality medical image registration by maximization of mutual information. Ph.D. Thesis, Catholic University of Leuven, Leuven, Belgium.
3. Automated multi-modality image registration based on information theory;Collignon,1995
4. Cocosco, C.A., Kollokian, V., Kwan, R.K.-S., Evans, A.C., 1997. BrainWeb: Online Interface to a 3D MRI Simulated Brain Database. In: Proceedings of the Third International Conference on Functional Mapping of the Human Brain, NeuroImage, 5(4), S425. Available from: .
5. http://www.vuse.vanderbilt.edu/~image/registration.