@Book{Friedrich1882,
author  = "Friedrich, Johann",
title   = "Die vocati episcopi Erchanfried und Otkar der Passauer und der Oadalhart episcopus der Freisinger Urkunden",
year    = "1882",
address = "München",
series  = "Sitzungsberichte",
volume  = "1882,1,5",
url     = "https://publikationen.badw.de/en/007458275",
}