1. The HEAO 3 gamma-ray spectrometer
2. J.L. Matteson, in these proceedings.
3. Gamma Ray Astrophysics to the Year 2000;Lingenfelter,1988
4. Gamma Ray Astrophysics to the Year 2000;Lingenfelter,1988
5. Astronomy and Astrophysics for the 1990's;Field,1982