@book { LaRpubliquedmocratiqueallemande,
    title = "La République démocratique allemande",
    author = "Chantal {Metzger}",
    year = "2011",
    publisher = "Peter Lang Verlag",
    address = "Bruxelles, Belgium",
    doi = "10.3726/978-3-0352-6041-0",
    url = "https://www.peterlang.com/document/1044020"
}