@Book{Muffat1875,
author  = "Muffat, Karl August",
title   = "Ueber Margareta von Schwangau",
year    = "1875",
address = "München",
series  = "Sitzungsberichte",
volume  = "1875,1,5",
url     = "https://publikationen.badw.de/de/007458701",
}