@book { EuropischeRegionalfrderunginderRegionBerlin19891999,
    title = "Europäische Regionalförderung in der Region Berlin 1989–1999",
    author = "Birgit {Rothschild}",
    year = "2021",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1096134"
}