@book { TheUnityofEurope,
    title = "The Unity of Europe",
    subtitle = "With an introduction by H. N. Brailsford. Edited by Andreas Wilkens",
    author = "Andreas {Wilkens} and Hilda {Monte}",
    year = "2023",
    publisher = "Peter Lang Verlag",
    address = "Bruxelles, Belgium",
    doi = "10.3726/b20534",
    url = "https://www.peterlang.com/document/1303073"
}