3BARB PALSER, The Ins and Outs of iPad Apps, American Journalism Review, Spring, 2011.
4ROGER FIDLE, 2013 Q1 Research Report i: News consumption on mobile media surpassing desktop computers and newspapers, RJI-DPA Mobile Media Research Project, APRIL 25, 2013.
5marek.miller, Making paid content work the New York Times exp.erience, March 19, 2013.
6spoke at 'the Digital Innovators Summit in Berlin about the NYT' s experience in embracing paid content strategy.
7Ryan Chittum: 《The NYT' s $150 million-a-year pay wall》 , Columbia Journalism Review, August 1,2013.