@Book{Winkelmann1876,
author  = "Winkelmann, Eduard",
title   = "Ueber eine angebliche Rede des Kaisers Otto IV.",
year    = "1876",
address = "München",
series  = "Sitzungsberichte",
volume  = "1876,18",
url     = "https://publikationen.badw.de/de/007458861",
}