@book { NeuesausderBergweltVierBergromane,
    title = "Neues aus der Bergwelt: Vier Bergromane",
    author = "Alfred {Bekker} and Anna {Martach}",
    year = "2020",
    publisher = "Uksak E-Books",
    address = "Lengerich, Deutschland",
    url = "https://uksakebooks.grin.com/document/307348"
}