@book { KonkreteIdentitt,
    title = "Konkrete Identität",
    author = "Gerhard {Droesser} and Ralf {Lutz} and Jochen {Sautermeister}",
    year = "2021",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1106649"
}