Some weeks ago, I attended a family reunion where the children ranged from age 10 to 18. As we were all talking, someone asked a question about a specific movie. Immediately, every kid pulled out a smartphone, and within 30 seconds they all had answers. Some went straight to the Internet Movie Database (using a smartphone app, of course); two quickly searched Yahoo! for movie reviews; others went to their favorite sites to sample public opinion.
Stored only when both papers are in the corpus — 116 citations exist upstream.