@book { PolitischekonomiegraduellerHandelsintegration,
    title = "Politische Ökonomie gradueller Handelsintegration",
    author = "Margareta {Drzeniek}",
    year = "2021",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1096184"
}