@book { AuenvertretungdesEuroraums,
    title = "Außenvertretung des Euroraums",
    author = "Anna {Serwotka}",
    year = "2016",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    doi = "10.3726/978-3-653-06968-6",
    url = "https://www.peterlang.com/document/1050530"
}