@incollection{,
address  = {},
author = {Irgang, Winfried},
booktitle = {Irgang, Schlesien im Mittelalter},
keywords = {Schlesien; Mittelalter; Irgang, Winfried (1942-)},
pages = {114-131},
title={Oberschlesien im Mittelalter: Einführung in Raum und Zeit},
uniqueid = {1301223},
url = {http://opac.regesta-imperii.de/id/1301223},
year = {2007}
}