@phdthesis{Neumann2003,
  author      = {Frank Neumann},
  title       = {Iterierte Darstellungen der Zopfgruppe},
  type        = {doctoralthesis},
  pages       = {201},
  school      = {Universit{\"a}tsbibliothek Johann Christian Senckenberg},
  year        = {2003},
}