@book { Beyond911,
    title = "Beyond 9/11",
    author = "Christian {Klöckner} and Simone {Knewitz} and Sabine {Sielke}",
    year = "2014",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    doi = "10.3726/978-3-653-02689-4",
    url = "https://www.peterlang.com/document/1046348"
}