@book { UnitedinDiversity,
    title = "United in Diversity?",
    author = "Eduardo J. {Ruiz Vieytez}",
    year = "2014",
    publisher = "Peter Lang Verlag",
    address = "Bruxelles, Belgium",
    doi = "10.3726/978-3-0352-6389-3",
    url = "https://www.peterlang.com/document/1053793"
}