EUV spectral energy distribution of quasars restored from associated absorbers S. A. Levshakov, I. I. Agafonova, D. Reimers, J. L. Hou and P. Molaro A&A, 483 1 (2008) 19-34 Published online: 19 March 2008 DOI: 10.1051/0004-6361:20079109