Star formation histories of early-type galaxies at z = 1.2 in cluster and field environments R. Gobat, P. Rosati, V. Strazzullo, A. Rettura, R. Demarco and M. Nonino A&A, 488 3 (2008) 853-860 Published online: 17 July 2008 DOI: 10.1051/0004-6361:200809531