@book { ZurHandhabungmglicherKonfliktarteninderBeschaffung,
    title = "Zur Handhabung möglicher Konfliktarten in der Beschaffung",
    author = "Christopher {Bisping}",
    year = "2003",
    publisher = "Diplom.de",
    address = "Hamburg, Deutschland",
    doi = "10.3239/9783832468354",
    url = "https://m.diplom.de/document/222182"
}