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Colleoni, E,Rozza A, Arvidsson A, 2014, Echo Chamber or Public Sphere? Predicting Political Orientation and Measuring Political Homophily in Twitter Using Big Data, Journal of Communication. April 2014, Vol. 64 Issue 2, p317, 16 p

Kruse, LM, Norris DR & Flinchum JR ‘Social Media as a Public Sphere?: Politics on Social Media’, The Sociological Quarterley, vol. 59, no. 1, pp. 62-84.

Williams, H.T., McMurray, J.R., Kurz, T. and Lambert, F.H., 2015. Network analysis reveals open forums and echo chambers in social media discussions of climate change. Global Environmental Change, 32, pp.126-138.

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