D. Garzia. Political Psychology, 34 (1):
67-89(2013)First published online: October 17, 2012, http://dx.doi.org/10.1111/j.1467-9221.2012.00918.x. (Eurobarometer).
J. Bølstad. European Union Politics, 16 (1):
23-44(2015)First published online: October 5, 2014, http://dx.doi.org/10.1177/1465116514551303. (Eurobarometer).
A. Ceobanu, and T. Koropeckyj-Cox. Population Research and Policy Review, 32 (2):
261--284(2013)First published online: October 19, 2012. http://dx.doi.org/10.1007/s11113-012-9260-7. (Eurobarometer).
A. Okulicz-Kozaryn. Journal of Happiness Studies, 12 (2):
225-243(2011)First published online: February 11, 2010, http://dx.doi.org/10.1007/s10902-010-9188-8. (Eurobarometer).
M. Quaranta, and S. Martini. Electoral Studies, (2016)First published online: February 27, 2016, http://dx.doi.org/10.1016/j.electstud.2016.02.015. (Eurobarometer).
S. Schieder. Debating Europe: the 2009 European parliament elections and beyond, Nomos Verlagsgesellschaft mbH & Co. KG, Baden-Baden, (Eurobarometer).(2011)
G. Daniele, and B. Geys. Journal of European Public Policy, 22 (5):
650-670(2015)First published online: December 2, 2014, http://dx.doi.org/10.1080/13501763.2014.988639. (Eurobarometer).
I. Verheul, R. Thurik, I. Grilo, and P. van der Zwan. Journal of Economic Psychology, 33 (2):
325-341(2012)http://dx.doi.org/10.1016/j.joep.2011.02.009. (Eurobarometer).
L. Ezrow, C. De Vries, M. Steenbergen, and E. Edwards. Party Politics, 17 (3):
275-301(2011)First published online: July 29,2010. http://dx.doi.org/10.1177/1354068810372100. (Eurobarometer).
S. Zmerli. Frankreich Jahrbuch 2014: Zivilgesellschaft in Frankreich, Deutschland und Europa, Springer Fachmedien, Wiesbaden, http://dx.doi.org/10.1007/978-3-658-09844-5_3. (Eurobarometer).(2015)