@book { VahlensKompendiumderWirtschaftstheorieundWirtschaftspolitikBand1,
    title = "Vahlens Kompendium der Wirtschaftstheorie und Wirtschaftspolitik  Band 1",
    author = "Thomas {Apolte} and Dieter {Bender} and Hartmut {Berg} and Dieter {Cassel} and Mathias {Erlei} and Heinz {Grossekettler} and Karl-Hans {Hartwig} and Lothar {Hübl} and Wolfgang {Kerber} and Volker {Nienhaus} and Notburga {Ott} and Jürgen {Siebke} and Heinz-Dieter {Smeets} and H. Jörg {Thieme} and Uwe {Vollmer}",
    year = "2012",
    publisher = "Vahlen",
    address = "München, Deutschland",
    url = "https://vahlen.openpublishing.com/document/1220863"
}