@book { SteuerlicheRechtsformoptimierung,
    title = "Steuerliche Rechtsformoptimierung",
    author = "Tobias {Teufel}",
    year = "2021",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1094073"
}