@book { SorgfaltdesDenkens,
    title = "Sorgfalt des Denkens",
    author = "Roman {Siebenrock} and Wilhelm {Tolksdorf}",
    year = "2021",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1100751"
}