K. Cardiff. The Political Economy of Adjustment Throughout and Beyond the Eurozone Crisis: What Have We Learned?, Routledge, London, (Eurobarometer).(2020)
T. Graf. Sozialwissenschaftliche Studien des Zentrums für Militärgeschichte und Sozialwissenschaften der Bundeswehr Berliner Wissenschafts-Verlag, Berlin, (2020)(ISSP).
S. Bloehdorn, и A. Hotho. Proceedings of the MSW 2004 workshop at the 10th ACM SIGKDD Conference on Knowledge Discovery and Data Mining, стр. 70-87. (августа 2004)
C. Vögele, и U. Ohliger. SCM Studies in Communication and Media, 9 (4):
627-650(2020)https://doi.org/10.5771/2192-4007-2020-4-627. (Politbarometer) (GLES).
M. Hossen, M. Faiad, M. Chowdhury, и M. Islam. International Journal of Computer Science & Information Technology (IJCSIT), 10 (1):
95 - 105(февраля 2018)
S. Jänicke, T. Efer, M. Büchler, и G. Scheuermann. Computer Vision, Imaging and Computer Graphics - Theory and Applications, стр. 153--171. Cham, Springer International Publishing, (2015)