@book{Eichfelder2015,
author = {Eichfelder, Sebastian and Hechtner, Frank and Hundsdoerfer, Jochen},
year = {2015},
language = {eng},
copyright = {http://www.fu-berlin.de/sites/refubium/rechtliches/Nutzungsbedingungen},
title = {Formula apportionment},
url = "http://dx.doi.org/10.17169/refubium-23443",
}