@book { DieAsthmaschulefrmeinKind,
    title = "Die Asthmaschule für mein Kind",
    author = "Dr. med. Stefan {Schwarz}",
    year = "2014",
    publisher = "Schlütersche Verlagsgesellschaft mbH & Co. KG",
    address = ", Deutschland",
    url = "https://schluetersche.openpublishing.com/document/403896"
}