@book { DerFlchtlinginderWeltgeschichte,
    title = "Der Flüchtling in der Weltgeschichte",
    subtitle = "Ein ungelöstes Problem der Menschheit",
    author = "André {Mercier}",
    year = "1974",
    publisher = "Peter Lang Verlag",
    address = "Lausanne, Switzerland",
    url = "https://www.peterlang.com/document/1112983"
}