@book{Wolf2006,
author = {Wolf, Nikolaus},
year = {2006},
isbn = {3-938369},
language = {eng},
copyright = {http://www.fu-berlin.de/sites/refubium/rechtliches/Nutzungsbedingungen},
title = {Was Germany ever united?},
url = "http://dx.doi.org/10.17169/FUDOCS_document_000000000251",
}