@book { WintertourismusinSachsensMittelgebirgen,
    title = "Wintertourismus in Sachsens Mittelgebirgen",
    subtitle = "Marketingstrategien zur Anpassung an die Folgen des Klimawandels",
    author = "Andreas {Hoy}",
    year = "2008",
    publisher = "Diplom.de",
    address = "Hamburg, Deutschland",
    doi = "10.3239/9783836613255",
    url = "https://m.diplom.de/document/225797"
}