@book { KnnenPublicPrivatePartnershipsdieFinanzproblemeeuropischerRegionenlsen,
    title = "Können Public Private Partnerships die Finanzprobleme europäischer Regionen lösen?",
    author = "Michael {Klabe}",
    year = "2009",
    publisher = "Diplom.de",
    address = "Hamburg, Deutschland",
    doi = "10.3239/9783836624695",
    url = "https://m.diplom.de/document/226466"
}