8Bruns, A., Blogs, Wikipedia, Second Life, and Beyond: From Production to Produsage, New York, Peter Lang Pub- lishing, 2008, p.23-30.
9Bruns, A., "Dis- tributed Creativity Filesharing and Produsage", in Sonvilla- Weiss, S. (ed.), Mashup Cultures, Vienna, Springer, 2010, pp. 24-37.
10Kaplan, A. M. & Haenlein, M. , "Users of the World, U- nite! The Challenges and Opportunities of Social Media", Business Horizons, 2010, Vol.53, No.1.