Gamma-Ray Observations of the Galactic Center from HEAO-3 Riegler, G. R. ; Ling, J. C. ; Mahoney, W. A. ; Wheaton, W. A. ; Jacobson, A. S. Abstract Publication: Bulletin of the American Astronomical Society Pub Date: September 1982 Bibcode: 1982BAAS...14R.974R