@book { SmarterHausnotrufNotrufknopfSeniorenhandymehr,
    title = "Smarter Hausnotruf, Notrufknopf, Seniorenhandy & mehr",
    author = "Klaus {Bscheid} and Bettina {Kiebler}",
    year = "2023",
    publisher = "via tolino media",
    address = "München, Deutschland",
    url = "https://tolino.openpublishing.com/document/1416520"
}