@book { AktivtrotzDemenz,
    title = "Aktiv trotz Demenz",
    author = "Johanna {Radenbach}",
    year = "2014",
    publisher = "Schlütersche Verlagsgesellschaft mbH & Co. KG",
    address = ", Deutschland",
    url = "https://schluetersche.openpublishing.com/document/403890"
}