Conference Record of the 1991 IEEE Nuclear Science Symposium and Medical Imaging Conference Nuclear Science Symposium and Medical Imaging Conference, 1991., Conference Record of the 1991 IEEE. :438-443 vol.1 1991
Conference Record of the 1991 IEEE Particle Accelerator Conference Particle Accelerator Conference, 1991. Accelerator Science and Technology., Conference Record of the 1991 IEEE. :982-984 vol.2 1991
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