@book { CitoyenSansPapiers, title = "Citoyen Sans-Papiers", subtitle = "Irreguläre MigrantInnen als politische AkteurInnen in Frankreich", author = "Katharina {Ludwig}", year = "2008", publisher = "Peter Lang Verlag", address = "Berlin, Germany", url = "https://www.peterlang.com/document/1104791" }