@book { TheWesternBalkansonTheirWaytotheEU,
    title = "The Western Balkans on Their Way to the EU?",
    author = "Sinisa {Kusic} and Claudia {Grupe}",
    year = "2021",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1102984"
}