@book { UmstrittenesGrenzland,
    title = "Umstrittenes Grenzland",
    author = "Philippe {Beck}",
    year = "2013",
    publisher = "Peter Lang Verlag",
    address = "Bruxelles, Belgium",
    doi = "10.3726/978-3-0352-6300-8",
    url = "https://www.peterlang.com/document/1109496"
}