Mirza Faisal Beg Michael I. Miller Alain Trouvé Laurent Younes Computing Large Deformation Metric Mappings via Geodesic Flows of Diffeomorphisms. 139-157 2005 61 International Journal of Computer Vision 2 http://dx.doi.org/10.1023/B:VISI.0000043755.93987.aa db/journals/ijcv/ijcv61.html#BegMTY05