http://japanese.engadget.com/2016/01/07/pc-airbar-6000-4-e-ink-ces-2016/

https://twitter.com/AlgebraFact/status/684026057993895936

http://www.sankei.com/west/news/160109/wst1601090064-n1.html

http://headlines.yahoo.co.jp/hl?a=20160110-00000005-khks-soci

http://mainichi.jp/articles/20160110/k00/00e/040/125000c