@book { WachstumsmarktAmbulantePflege,
    title = "Wachstumsmarkt  Ambulante Pflege",
    author = "Karla {Kämmer} and Birger {Schlürmann}",
    year = "2015",
    publisher = "Schlütersche Verlagsgesellschaft mbH & Co. KG",
    address = ", Deutschland",
    url = "https://schluetersche.openpublishing.com/document/403932"
}