Search for Pulsed Gamma Ray Emission from Geminga CG-195+04 Irwin, R. T. ; Turner, O. T. ; White, R. S. ; Zych, A. D. ; Sweeney, W. E. Abstract Publication: Bulletin of the American Astronomical Society Pub Date: September 1987 Bibcode: 1987BAAS...19.1040I