@book { LeichenDoppelLeichenernteLeichenspiel,
    title = "Leichen-Doppel: Leichenernte + Leichenspiel",
    author = "Wilhelm J. {Krefting}",
    year = "2015",
    publisher = "via tolino media",
    address = "München, Deutschland",
    url = "https://tolino.openpublishing.com/document/1278707"
}