@incollection{,
address  = {},
author = {Vries, Oebele},
booktitle = {Vries, De taal van recht en vrijheid},
keywords = {Friesland; Vries, Oebele (1947-)},
pages = {43-66},
title={Die Friesische Freiheit: ein Randproblem des Reiches},
uniqueid = {1749460},
url = {http://opac.regesta-imperii.de/id/1749460},
year = {2012}
}