@phdthesis{Hagen2005,
  author      = {Tobias Hagen},
  title       = {Labour market effects of fixed-term employment contracts : microeconometric analyses for West Germany},
  type        = {doctoralthesis},
  school      = {Universit{\"a}tsbibliothek Johann Christian Senckenberg},
  year        = {2005},
}