@book { DerBernerTotentanzdesNiklausManuel,
    title = "Der Berner Totentanz des Niklaus Manuel",
    author = "Wilfried {Kettler}",
    year = "2021",
    publisher = "Peter Lang Verlag",
    address = "Lausanne, Switzerland",
    url = "https://www.peterlang.com/document/1105848"
}