Using GRO J1655-40 to test Swift/BAT as a monitor for bright hard X-ray sources F. Senziani, G. Novara, A. De Luca, P. A. Caraveo, T. Belloni and G. F. Bignami A&A, 476 3 (2007) 1297-1305 Published online: 09 October 2007 DOI: 10.1051/0004-6361:20077619