@Book{Ritter1872,
author  = "Ritter, Moriz",
title   = "Quellenbeiträge zur Geschichte des Kaisers Rudolf II.",
year    = "1872",
address = "München",
series  = "Sitzungsberichte",
volume  = "1872,5",
url     = "https://publikationen.badw.de/de/003209526",
}