@book { KreativittstechnikenzurIdeenfindung,
    title = "Kreativitätstechniken zur Ideenfindung",
    author = "Pascal {Holzer}",
    year = "2011",
    publisher = "Diplom.de",
    address = "Hamburg, Deutschland",
    doi = "10.3239/9783842820135",
    url = "https://m.diplom.de/document/228604"
}