@book{id_12590,
author = "Wittmann, Franz Michael",
title = "Die Burggrafen von Regensburg",
year = "1854",
address = "München",
publisher = "Verl. der K. Akad.",
series = "Abhandlungen",
volume = "7,7",
url = "http://publikationen.badw.de/de/003192511",
}