@book { HandbuchzureuropischenSicherheit,
    title = "Handbuch zur europäischen Sicherheit",
    author = "Franz {Kernic} and Gunther {Hauser}",
    year = "2021",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1100790"
}