QSO Absorption Lines, Gaseous Infall and Star Formation
  We investigate the impact of recent observational advances in research on the gaseous content of the universe on our knowledge of star formation histories of disk galaxies. Several contemporary surveys indicate that large quantities of gas which has not been astrated or has been astrated only weakly are bound to galaxies at later epochs ($z\le 1$). 
Milan M. Cirkovic, Srdjan Samurovic and Vesna Milosevic-Zdjelar