@book { Kaiserschmarrn, title = "Kaiserschmarrn", subtitle = "Die verrücktesten Skandale der Fußball-Nationalmannschaft", author = "Ralf {Friedrichs}", year = "2014", publisher = "humboldt", address = "Hannover, Deutschland", url = "https://schluetersche.openpublishing.com/document/403202" }