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Published online by Cambridge University Press: 06 October 2005
We report the current results of our on-going search for molecular hydrogen (H$_2$) in damped Lyman-$\alpha$ (DLA) and sub-DLA systems at $1.8<z_{\rm abs}<3.4$ using the Ultraviolet and Visible Echelle Spectrograph (UVES) installed at the ESO's Very Large Telescope (VLT), Unit Kueyen.