@book{Bönke2010,
author = {Bönke, Timm and Schröder, Carsten and Werdt, Clive},
year = {2010},
isbn = {978-3-941240-16-2},
language = {eng},
copyright = {http://www.fu-berlin.de/sites/refubium/rechtliches/Nutzungsbedingungen},
title = {Compiling a harmonized database from Germany’s 1978 to 2003},
url = "http://dx.doi.org/10.17169/FUDOCS_document_000000005078",
}