Stellar population properties for a sample of hard X-ray AGNs L. Morelli, V. Calvi, N. Masetti, P. Parisi, R. Landi, E. Maiorano, D. Minniti and G. Galaz A&A, 556 (2013) A135 Published online: 08 August 2013 DOI: 10.1051/0004-6361/201321733