@incollection{2011:ooyen:vorwort_zu,
title = {Vorwort zur vierten Auflage},
year = {2011},
note = {},
booktitle = {Die Staatstheorie des Bundesverfassungsgerichts und Europa},
pages = {9--9},
edition = {4},
author = {Ooyen, Robert Chr. van},
publisher = {Nomos},
address = {Baden-Baden},
series = {},
volume = {}
}