@incollection{,
address  = {},
author = {Grubbs, Judith Evans},
booktitle = {Late antiquity. A guide to the postclassical world},
keywords = {Spätantike; Ehe},
pages = {388-389},
title={Concubinage},
uniqueid = {909399},
url = {http://opac.regesta-imperii.de/id/909399},
year = {1999}
}