Metal-rich absorbers at high redshifts: abundance patterns S. A. Levshakov, I. I. Agafonova, P. Molaro, D. Reimers and J. L. Hou A&A, 507 1 (2009) 209-226 Published online: 03 September 2009 DOI: 10.1051/0004-6361/200912225