17. D. N. Levine, X. Hu, K. K. Tan, S. Galhotra, A. Herrmann, C. A. Pelizzari, G. T. Chen, R. N. Peck, C. T. Chen and M. D. Cooper. Integrated 3-D Display of MR, CT, and PET images of the brain, in 3D Imaging in Medicine, J. K. Udupa and G. T. Herman (Eds.) (Boca Raton, FL: CRC Press, 1990), Chapter 10.