Using the ROSAT Bright Source Catalogue to find counterparts for IBIS/ISGRI survey sourcesJ. B. Stephen, L. Bassani, M. Molina, A. Malizia, A. Bazzano, P. Ubertini, A. J. Dean, A. J. Bird, F. Lebrun, R. Much and R. WalterA&A, 432 2 (2005) L49-L52DOI: https://doi.org/10.1051/0004-6361:200500017
