@book { RegionaleVerteilungderBeschftigunginDeutschland,
    title = "Regionale Verteilung der Beschäftigung in Deutschland",
    author = "Anke {Wetzka}",
    year = "2021",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1107386"
}