Two hard X-ray sources in 100 square degrees around the Galactic Center.
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R. Sunyaev | E. Churazov | M. Gilfanov | A. Goldwurm | P. Laurent | L. Bouchet | J. Roques | P. Mandrou | B. Cordier | M. Pavlinsky | S. Grebenev | N. Yamburenko | G. Babalyan | I. Dekhanov | J. Paul | M. Niel