@book { DieDDRindendeutschfranzsischenBeziehungen,
    title = "Die DDR in den deutsch-französischen Beziehungen",
    author = "Anne {Kwaschik} and Ulrich {Pfeil}",
    year = "2013",
    publisher = "Peter Lang Verlag",
    address = "Bruxelles, Belgium",
    doi = "10.3726/978-3-0352-6335-0",
    url = "https://www.peterlang.com/document/1053739"
}