@incollection{2019:marhold:differenti,
title = {Differentiated Integration, Reconsidered},
year = {2019},
note = {},
booktitle = {Europe - Against the Tide},
pages = {35--42},
edition = {},
author = {Marhold, Hartmut},
publisher = {Nomos},
address = {Baden-Baden},
series = {Denkart Europa | Mindset Europe},
volume = {28}
}