@book { PerspektivenfrEuropaeineneueffnungPerspectivesofEuropeTheNewOpening,
    title = "Perspektiven für Europa – eine neue Öffnung?- Perspectives of Europe – The New Opening?",
    author = "Joanna {Dlugosz} and Marcin {Witkowski}",
    year = "2021",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1101050"
}