@book { WittgensteinJahrbuch20012002,
    title = "Wittgenstein-Jahrbuch 2001/2002",
    author = "Wilhelm {Lütterfelds} and Andreas {Roser} and Richard {Raatzsch}",
    year = "2021",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1095569"
}