@book { 20YearsaftertheCollapseofCommunism,
    title = "20 Years after the Collapse of Communism",
    author = "Nicolas {Hayoz} and Leszek {Jesien} and Daniela {Koleva}",
    year = "2011",
    publisher = "Peter Lang Verlag",
    address = "Lausanne, Switzerland",
    doi = "10.3726/978-3-0351-0273-4",
    url = "https://www.peterlang.com/document/1052276"
}