IBIS Veto System - Background rejection, instrument dead time and zoning performanceE. M. Quadrini, A. Bazzano, A. J. Bird, K. Broenstad, F. Di Marco, G. La Rosa, M. Michalska, P. Orleanski, A. Solberg and P. UbertiniA&A, 411 1 (2003) L153-L157DOI: https://doi.org/10.1051/0004-6361:20031259