@book { DieAbtretungimEuropischenKollisionsrecht,
    title = "Die Abtretung im Europäischen Kollisionsrecht",
    author = "Werner {Mangold}",
    year = "2021",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1092271"
}