@book { GrundzgederUnternehmensfinanzierung,
    title = "Grundzüge der Unternehmensfinanzierung",
    author = "Günter {Wöhe} and Jürgen {Bilstein} and Dietmar {Ernst} and Joachim {Häcker}",
    year = "2013",
    publisher = "Vahlen",
    address = "München, Deutschland",
    url = "https://vahlen.openpublishing.com/document/1220887"
}