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Astron. Astrophys. 324, L17-L20 (1997) AcknowledgementsWe acknowledge professor A. Dar for this exciting model of gamma ray bursts and for interesting discussions of it. We are specially grateful to professor V.M. Lipunov and drs M.E. Prokhorov and S.A. Popov for useful advise and discussions.
© European Southern Observatory (ESO) 1997 Online publication: May 26, 1998 ![]() |