@book { FactoryOutletCenteralsInnovationimHandel,
    title = "Factory Outlet Center als Innovation im Handel",
    author = "Bernhard {Knüttel}",
    year = "1999",
    publisher = "Diplom.de",
    address = "Hamburg, Deutschland",
    doi = "10.3239/9783832415693",
    url = "https://m.diplom.de/document/217411"
}