@book { InformalityinEasternEurope,
    title = "Informality in Eastern Europe",
    author = "Christian {Giordano} and Nicolas {Hayoz}",
    year = "2013",
    publisher = "Peter Lang Verlag",
    address = "Lausanne, Switzerland",
    doi = "10.3726/978-3-0351-0651-0",
    url = "https://www.peterlang.com/document/1053066"
}