@book { WelthandelsorganisationWTOGATT,
    title = "Welthandelsorganisation WTO (GATT)",
    subtitle = "Aufgaben / Aktivitäten / EU-Beziehungen- Ein Hand- und Lehrbuch",
    author = "Ali Sait {Yüksel}",
    year = "2001",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1092057"
}