http://ameblo.jp/tagajyomiraie/entry-11181104138.html

http://www.topuniversities.com/university-rankings/world-university-rankings/2013#sorting=rank+region=+country=+faculty=+stars=false+search=

http://headlines.yahoo.co.jp/hl?a=20130927-00000131-jij-soci

http://gigazine.net/news/20130926-right-to-delete-thing-on-line/

http://www.j.u-tokyo.ac.jp/sl-lr/index.html

http://headlines.yahoo.co.jp/hl?a=20130927-00000754-yom-soci