@book { MitdemArztaufAugenhhe,
    title = "Mit dem Arzt auf Augenhöhe",
    author = "Prof. Dr. med. Hans-Willi Maria {Breuer}",
    year = "2010",
    publisher = "humboldt",
    address = "Hannover, Deutschland",
    url = "https://schluetersche.openpublishing.com/document/403404"
}