@book { DasMeersotiefderWindsofrei,
    title = "Das Meer so tief, der Wind so frei",
    author = "Barbara {Schinko}",
    year = "2021",
    publisher = "via tolino media",
    address = "München, Deutschland",
    url = "https://tolino.openpublishing.com/document/1001211"
}