@book { PerspektivePensionopolis,
    title = "Perspektive Pensionopolis!",
    subtitle = "Anfragen an eine alternde Gesellschaft am Beispiel der Europastadt Görlitz/Zgorzelec in der Euroregion Neiße",
    author = "Erika {Steinert} and Norbert {Zillich}",
    year = "2007",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    doi = "10.3726/978-3-653-01428-0",
    url = "https://www.peterlang.com/document/1053618"
}