@book { TheopenSecretofToyotasChange,
    title = "The open Secret of Toyota's Change",
    author = "Doris {Kermer}",
    year = "2007",
    publisher = "Diplom.de",
    address = "Hamburg, Deutschland",
    doi = "10.3239/9783836605168",
    url = "https://m.diplom.de/document/225358"
}