@book { SchsischeSchweiz,
    title = "Sächsische Schweiz",
    subtitle = "Eine Entdeckungsreise in faszinierenden Bildern",
    author = "Philipp {Zieger}",
    year = "2020",
    publisher = "humboldt",
    address = "Hannover, Deutschland",
    url = "https://schluetersche.openpublishing.com/document/932666"
}