@InProceedings{LIS51,<br>title = {An Automatic Registration Methodfor Frameless Stereotaxy, Image Guided Surgery, and Enhanced RealityVisualization},<br>author = {W. E. L. Grimson and T. Lozano-Perez and W.M. Wells III and G.J. Ettinger andS.J. White and R. Kikinis},<br>year = {1994},<br>url = {http://lis.csail.mit.edu/pubs/tlp/frameless-stereotaxy-cvpr.pdf},<br>booktitle = {Computer Vision and Pattern RecognitionConference},<br>}