@book { LanationetsesterritoiresenEuropecentrale,
    title = "La nation et ses territoires en Europe centrale",
    subtitle = "Une approche géopolitique",
    author = "Gyula {Csurgai}",
    year = "2005",
    publisher = "Peter Lang Verlag",
    address = "Lausanne, Switzerland",
    url = "https://www.peterlang.com/document/1098766"
}