Introducing BAX: A database for X-ray clusters and groups of galaxies R. Sadat, A. Blanchard, J.-P. Kneib, G. Mathez, B. Madore and J. M. Mazzarella A&A, 424 3 (2004) 1097-1100 Published online: 06 September 2004 DOI: 10.1051/0004-6361:20034029