@book { PoliticalPartiesandEuropeanIntegration,
    title = "Political Parties and European Integration",
    author = "Cesareo {Rodriguez-Aguilera de Prat}",
    year = "2021",
    publisher = "Peter Lang Verlag",
    address = "Bruxelles, Belgium",
    url = "https://www.peterlang.com/document/1106058"
}