@book { ExcelfrWirtschaftswissenschaftler,
    title = "Excel für Wirtschaftswissenschaftler",
    author = "Heinz Lothar {Grob} and Jan-Armin {Reepmeyer} and Frank {Bensberg}",
    year = "2014",
    publisher = "Vahlen",
    address = "München, Deutschland",
    url = "https://vahlen.openpublishing.com/document/1220849"
}