http://akiba-pc.watch.impress.co.jp/docs/news/news/20140316_639850.html

http://news.goo.ne.jp/article/dot/life/dot-2014031200040.html

http://www.jexlimited.com/s_kawaraban.htm#02_01

http://www.courts.go.jp/sihotokei/graph/pdf/B24No1-1.pdf

http://kanz.jp/hanrei/detail/84040/

http://gendai.ismedia.jp/articles/-/38664