Sabino Kornrich, und Maureen A. Eger. Social Politics: International Studies in Gender, State & Society, (2014)https://doi.org/10.1093/sp/jxu030. (ISSP).
M. te Grotenhuis, M. Scholte, N. de Graaf, und B. Pelzer. European Sociological Review, 31 (5):
643-654(2015)First published online: July 29, 2015, http://dx.doi.org/10.1093/esr/jcv069. (Eurobarometer).
E. Bacchiocchi, M. Florio, und M. Gambaro. Telecommunications Policy, 35 (4):
382 - 396(2011)First published online: March 29, 2011, http://dx.doi.org/10.1016/j.telpol.2011.03.001. (Eurobarometer).
P. Ferrari, L. Pagani, und C. Fiorio. Social Indicators Research, 104 (3):
545-554(2011)First published online: December 03, 2010, http://dx.doi.org/10.1007/s11205-010-9761-x. (Eurobarometer).