@book { DiplomatischesAsyl,
    title = "Diplomatisches Asyl",
    subtitle = "Zulässigkeit und Grenzen",
    author = "Irena {Klepper}",
    year = "2009",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1106689"
}