@book { ProzesskostenrechnungimKrankenhauscontrolling,
    title = "Prozesskostenrechnung im Krankenhauscontrolling",
    author = "Martina {Hugo}",
    year = "2007",
    publisher = "GRIN Verlag",
    address = "München, Germany",
    doi = "10.3239/9783638729741",
    url = "https://www.hausarbeiten.de/document/75930"
}