@book { DeutscherUnilateralismusim21Jahrhundert,
    title = "Deutscher Unilateralismus im 21. Jahrhundert",
    author = "Simon {Werner}",
    year = "2014",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    doi = "10.3726/978-3-653-04492-8",
    url = "https://www.peterlang.com/document/1048444"
}