@book{SchmidBaden2004,
  author    = {Alfons Schmid and Christian Baden},
  title     = {IAB-Betriebspanel Hessen 2003 : Abschlussbericht},
  url       = {https://www.iwak-frankfurt.de/wp-content/uploads/2015/03/IAB-Betriebspanel-Hessen-Endbericht-2003.pdf},
  year      = {2004},
}