@Book{Bosl1976,
author  = "Bosl, Karl",
title   = "Gesellschaftswandel, Religion und Kunst im hohen Mittelalter",
year    = "1976",
address = "München",
series  = "Sitzungsberichte",
volume  = "Jahrgang 1976, Heft 2",
url     = "https://publikationen.badw.de/en/003259476",
}