@phdthesis{Nikolopoulos2009,
  author      = {Alexander Stergios Nikolopoulos},
  title       = {Die Sicherung der Nachhaltigkeit von E-Learning-Angeboten in Hochschulen},
  type        = {doctoralthesis},
  school      = {Universit{\"a}tsbibliothek Johann Christian Senckenberg},
  year        = {2009},
}