The chemical evolution of elliptical galaxies with stellar and QSO dust production A. Pipino, X. L. Fan, F. Matteucci, F. Calura, L. Silva, G. Granato and R. Maiolino A&A, 525 (2011) A61 Published online: 01 December 2010 DOI: 10.1051/0004-6361/201014843