@phdthesis{Wetzel2009,
  author      = {Heike Wetzel},
  title       = {European Railway Deregulation: Essays on Efficiency and Productivity of European Railways},
  type        = {doctoralthesis},
  pages       = {79},
  school      = {Leuphana Universit{\"a}t L{\"u}neburg, Universit{\"a}tsbibliothek der Leuphana Universit{\"a}t L{\"u}neburg},
  year        = {2009},
}