@book { SmarterLifeEssenz5,
    title = "SmarterLife Essenz 5",
    author = "Josef {Maiwald} and Schadt {Magdi}",
    year = "2022",
    publisher = "SmarterLife @ A-BiS GmbH",
    address = ", Deutschland",
    url = "https://tolino.openpublishing.com/document/1263722"
}