Diffuse molecular gas at high redshift - Detection of CO molecules and the 2175 Å dust feature at z = 1.64P. Noterdaeme, C. Ledoux, R. Srianand, P. Petitjean and S. LopezA&A, 503 3 (2009) 765-770DOI: https://doi.org/10.1051/0004-6361/200912330
