S. Koos. Journal of Consumer Policy, 34 (1):
127-151(2011)First published online: January 18, 2011, http://dx.doi.org/10.1007/s10603-010-9153-2. (Eurobarometer).
E. Korkmaz, and G. Ucoluk. 2001 Genetic and Evolutionary Computation Conference
Late Breaking Papers, page 245--251. San Francisco, California, USA, (9-11 July 2001)
M. Krötzsch, D. Vrandecic, and M. Völkel. The Semantic Web - ISWC 2006, 5th International Semantic Web Conference, ISWC 2006, Athens, GA, USA, November 5-9, 2006, Proceedings, volume 4273 of Lecture Notes in Computer Science, page 935--942. Springer, (2006)
T. Kuhn. European Union Politics, 13 (1):
94-117(2012)First published online: November 23, 2011, http://dx.doi.org/10.1177/1465116511418016. (Eurobarometer).
S. Kumlin, and P. Esaiasson. British Journal of Political Science, 42 (2):
263–282(April 2012)http://dx.doi.org/10.1017/S000712341100024X. (Eurobarometer).
J. Legge, and R. Durant. Public Organization Review, 12 (2):
191-207(2012)First published online: April 26, 2012, http://dx.doi.org/10.1007/s11115-012-0175-x(Eurobarometer).
R. Linden. Central and East European Politics: Changes and Challenges, Rowman & Littlefield Publishers, Lanham, Maryland, Vereinigte Staaten, 5. edition, (Eurobarometer).(2021)