@book { DasLeanSixSigmaToolbook,
    title = "Das Lean Six Sigma Toolbook",
    author = "Michael L. {George} and David {Rowlands} and Marc {Price} and John {Maxey} and Dirk {Dose} and Thiago {Silva Pereira} and Thomas {Paulat} and Maria {Proske} and Quyen {Vo} and Michael {Wiemker} and Marcel {Kastner}",
    year = "2016",
    publisher = "Vahlen",
    address = "München, Deutschland",
    url = "https://vahlen.openpublishing.com/document/1220924"
}