High Precision Gamma-Ray Burst Source Locations of Early-1991 Events from the Ulysses/Granat/PVO Network Cline, T. L. ; Hurley, K. ; Klebesadel, R. ; Laros, J. ; Lund, N. ; Boer, M. ; Sommer, M. Abstract Publication: Bulletin of the American Astronomical Society Pub Date: September 1991 Bibcode: 1991BAAS...23R1322C