@book { SmarterLifeEssenz2,
    title = "Smarter Life Essenz 2",
    author = "Josef {Maiwald} and Magdi {Schadt}",
    year = "2022",
    publisher = "SmarterLife @ A-BiS GmbH",
    address = ", Deutschland",
    url = "https://tolino.openpublishing.com/document/1311520"
}