@book { DiezeitlicheBegrenzungdesUrheberrechts,
    title = "Die zeitliche Begrenzung des Urheberrechts",
    author = "Christian {Seidel}",
    year = "2021",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1094276"
}