@book { FinancialDueDiligencedurchWirtschaftsprfungsgesellschaften,
    title = "Financial Due Diligence durch Wirtschaftsprüfungsgesellschaften",
    author = "Heiko {Hegwein}",
    year = "2021",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1099222"
}