@book { EuropaundseineWerte,
    title = "Europa und seine Werte",
    author = "Jerzy {Bartminski} and Rosemarie {Lühr}",
    year = "2021",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1107050"
}