... Springer Lecture Notes of Physics Series, in press, 2000 EXIST: A High Sensitivity Hard X-ray Imaging Sky Survey Mission for ISS (J. Grindlay, L. Bildsten, D. Chakrabarty, M. Elvis, A. Fabian, F.Fiore, N. Gehrels, C. Hailey, F. Harrison, D. Hartmann, T ...