@book { LiebeundSein,
    title = "Liebe und Sein",
    author = "Bernt {Knauber}",
    year = "2020",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    doi = "10.3726/b17234",
    url = "https://www.peterlang.com/document/1111242"
}