The metal content of the bulge globular cluster NGC 6528 M. Zoccali, B. Barbuy, V. Hill, S. Ortolani, A. Renzini, E. Bica, Y. Momany, L. Pasquini, D. Minniti and R. M. Rich A&A, 423 2 (2004) 507-516 Published online: 06 August 2004 DOI: 10.1051/0004-6361:20041014