5K. Viswanath & J. R. Jr. Finnegan,“The Knowledge Gap Hypothesis: Twenty five Years Later,” in B. R. Burleson(ed. ) ,Communication Yearbook 19, Thousand Oaks,CA: Sage,1996 ,pp. 187 - 227.
6P. Norris,“Does Television Erode Social Capital? A Reply to Putnam,”PS: Political Science & Politics, Vol. 29, No. 3(1996) ,pp. 474 - 480.
7M. Prior,“News vs. Entertainment: How Increasing Media Choice Widens Gaps in Political Knowledge and Turnout ,”American Journal of Political Science, Vol. 49, No. 3(2005), pp. 577 - 592.
8R. D. Putnam,Bowling Alone : The Collapse and Revival of American Community, New York: Simon and Schuster,2000.
9J. Van Dijk, The Network Society : Social Aspects of the New Media, London. Sage, 1999.
10J. Van Dijk,“A Framework for Digital Divide Research,” 2004 -01 - 15, http://shadow, cios. org: 7979/ journals/EJC/012/1/01211, html,2009 -01 - 10.