@book { DerBegriffdesTerrorismusimVlkerrecht,
    title = "Der Begriff des Terrorismus im Völkerrecht",
    author = "Tobias {Keber}",
    year = "2021",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1106585"
}