@phdthesis{Krieg2019,
  author      = {Jan Krieg},
  title       = {Functional renormalization group approach to classical and quantum spin systems},
  type        = {doctoralthesis},
  pages       = {189},
  school      = {Universit{\"a}tsbibliothek Johann Christian Senckenberg},
  year        = {2019},
}