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机译:FERMI constraints on the high energy, ~1 GeV, emission of long gamma ray bursts
Osservatorio Astronomico di Roma, v. Frascati 33, 00040 Monte Porzio Catone, Italy;
Osservatorio Astronomico di Trieste, via G.B. Tiepolo 11, 34143 Trieste, Italy;
Dept. of Particle Phys. and Astrophys., Weizmann Institute of Science, Rehovot 76100, Israel;