@book { TheInnerFrontier,
    title = "The Inner Frontier",
    subtitle = "The Place of Nation in the Political Theory of Democracy and Federalism",
    author = "Ramon {Maiz}",
    year = "2012",
    publisher = "Peter Lang Verlag",
    address = "Bruxelles, Belgium",
    doi = "10.3726/978-3-0352-6130-1",
    url = "https://www.peterlang.com/document/1044099"
}