@incollection{,
address  = {},
author = {},
booktitle = {Bouquet-Delisle, Recueil 6},
keywords = {},
pages = {661-662},
title={Charta Bertae sororis Ludovici Pii},
uniqueid = {1400440},
url = {http://opac.regesta-imperii.de/id/1400440},
year = {1870}
}