@phdthesis{Rothermund2004,
  author      = {Klaus Rothermund},
  title       = {Persistenz und Neuorientierung},
  type        = {doctoralthesis},
  school      = {Universit{\"a}t Trier},
  doi       = {10.25353/ubtr-xxxx-64c3-3af0},
  year        = {2004},
}