@incollection{,
address  = {},
author = {Irgang, Winfried},
booktitle = {Irgang, Schlesien im Mittelalter},
keywords = {Polen; Mittelalter; Reichsgeschichte; Irgang, Winfried (1942-)},
pages = {182-208},
title={"Libertas ecclesiae" und landesherrliche Gewalt- Vergleich zwischen dem Reich und Polen},
uniqueid = {1301227},
url = {http://opac.regesta-imperii.de/id/1301227},
year = {2007}
}