@book { DieGrtendesStiftesGurk,
    title = "Die Gärten des Stiftes Gurk",
    author = "Christian {Patzl}",
    year = "2005",
    publisher = "Diplom.de",
    address = "Hamburg, Deutschland",
    doi = "10.3239/9783832440930",
    url = "https://m.diplom.de/document/219720"
}