@book { DieGrenzenEuropas,
    title = "Die Grenzen Europas",
    subtitle = "Von der Geburt des Territorialstaats zum Europäischen Grenzregime",
    author = "Johannes {Krause}",
    year = "2009",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Allemagne",
    url = "https://www.peterlang.com/document/1107137"
}