@book { EinatmenAusatmenMuttersein,
    title = "Einatmen. Ausatmen. Mutter sein.",
    author = "Julia {Scharnowski}",
    year = "2021",
    publisher = "humboldt",
    address = "Hannover, Deutschland",
    url = "https://schluetersche.openpublishing.com/document/1108877"
}