@Book{Fuhrmann1984,
author  = "Fuhrmann, Horst",
title   = "Papst Urban II. und der Stand der Regularkanoniker. Vorgetragen am 4. November 1983",
year    = "1984",
address = "München",
series  = "Sitzungsberichte",
volume  = "1984,2",
url     = "https://publikationen.badw.de/en/000205768",
}