@book { MythosDieKlingederFreiheit,
    title = "Mythos: Die Klinge der Freiheit",
    author = "Joachim {Wältermann}",
    year = "2021",
    publisher = "via tolino media",
    address = "München, Deutschland",
    url = "https://tolino.openpublishing.com/document/1164669"
}