@book { LegitimacytheTreasureofPolitics,
    title = "Legitimacy: the Treasure of Politics",
    author = "Tage {Kurtén} and Lars {Hertzberg}",
    year = "2011",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1108222"
}