@phdthesis{RomeroVidal2021,
  author      = {Xavier Romero Vidal},
  title       = {The Macro Polity Revisited},
  type        = {doctoralthesis},
  school      = {Leuphana Universit{\"a}t L{\"u}neburg, Universit{\"a}tsbibliothek der Leuphana Universit{\"a}t L{\"u}neburg},
  year        = {2021},
}