@incollection{Schich2017,
author = {Schich, Winfried},
year = {2017},
language = {ger},
copyright = {http://creativecommons.org/licenses/by-nc/3.0/},
title = {Die Entstehung von mittelalterlichen Doppelstädten in der Mark Brandenburg},
url = "http://dx.doi.org/10.17169/refubium-113",
}