@book { AktiveArbeitsmarktpolitikinBrandenburg,
    title = "Aktive Arbeitsmarktpolitik in Brandenburg",
    author = "Patrick {Ehlers}",
    year = "2004",
    publisher = "GRIN Verlag",
    address = "München, Germany",
    doi = "10.3239/9783638276047",
    url = "https://www.hausarbeiten.de/document/24827"
}