@book { DieTrkeiaufdemWegindieEU,
    title = "Die Türkei auf dem Weg in die EU",
    author = "Metin {Aksoy}",
    year = "2021",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1103126"
}