@book { SwitzerlandEuropeanUnion,
    title = "Switzerland – European Union",
    subtitle = "An Impossible Membership?- Translated from French by Lisa Godin-Roger",
    author = "René {Schwok}",
    year = "2009",
    publisher = "Peter Lang Verlag",
    address = "Bruxelles, Belgium",
    url = "https://www.peterlang.com/document/1106082"
}