1. Reuters institute Digital News Report 2017;Newman,2017
2. The Filter Bubble: How the New Personalized Web Is Changing what We Read and How We Think;Pariser,2011
3. Republic.com 2.0;Sunstein,2009
4. Breaking up America: Advertisers and the New media World;Turow,1998
5. Networks of audience overlap in the consumption of digital news;Mukerjee;J. Commun.,2018