@book { TheRoadtoaUnitedEurope,
    title = "The Road to a United Europe",
    subtitle = "Interpretations of the Process of European Integration",
    author = "Morten {Rasmussen} and Ann-Christina L. {Knudsen}",
    year = "2009",
    publisher = "Peter Lang Verlag",
    address = "Bruxelles, Belgium",
    url = "https://www.peterlang.com/document/1106076"
}