@book { BesonderheitenderBeschaffungsplanunginKrankenhusern,
    title = "Besonderheiten der Beschaffungsplanung in Krankenhäusern",
    author = "Sven {Lübbe}",
    year = "2005",
    publisher = "Diplom.de",
    address = "Hamburg, Deutschland",
    doi = "10.3239/9783832489038",
    url = "https://m.diplom.de/document/224078"
}