@book { VermgensverteilungundstaatlicheAktivitt,
    title = "Vermögensverteilung und staatliche Aktivität",
    author = "Cay {Folkers}",
    year = "2018",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    doi = "10.3726/b13804",
    url = "https://www.peterlang.com/document/1068381"
}