@book { DurchstanzenvonFlachdecken,
    title = "Durchstanzen von Flachdecken",
    author = "Thoralf {Schlüter} and Falco {Herrmann}",
    year = "2005",
    publisher = "Diplom.de",
    address = "Hamburg, Deutschland",
    doi = "10.3239/9783832489359",
    url = "https://m.diplom.de/document/223882"
}