@book { BedingungsvariablenschpferischenDenkens,
    title = "Bedingungsvariablen schöpferischen Denkens",
    author = "Frank {Urbschat}",
    year = "2006",
    publisher = "Diplom.de",
    address = "Hamburg, Deutschland",
    url = "https://m.diplom.de/document/225102"
}