1. Arterton, C., & Greener, W. (2009). Obama. Strategies and tactics in the general election. In D. W. Johnson (Hrsg.), Campaigning for president 2008. Strategy and tactics, new voices and new techniques (S. 174–188). New York: Routledge.
2. Bachl, M. (2011). Erfolgsfaktoren politischer YouTube-Videos. In E. J. Schweitzer & S. Albrecht (Hrsg.), Das Internet im Wahlkampf: Analysen zur Bundestagswahl 2009 (S. 157–180). Wiesbaden: VS Verlag für Sozialwissenschaften.
3. Barko Germany, J. (2009). The online revolution. In D. W. Johnson (Hrsg.), Campaigning for president 2008. Strategy and Tactics, New Voices and New Techniques (S. 147–160). New York: Routledge.
4. Bates, D., Maechler, M., & Bolker, B. (2012). lme4: Linear mixed-effects models using S4 classes (R package version 0.999999-0).
http://CRAN.R-project.org/package=lme4
.
5. Boynton, B. (2008). Going Viral – The Dynamics of Attention. Paper presented at the conference on YouTube and the 2008 Election Cycle, Amherst, Massachussets.
http://scholarworks.umass.edu/cgi/viewcontent.cgi?filename=1&article=1000&context=jitpc2009&type=additional
.