http://book.asahi.com/reviews/reviewer/2017061100011.html

http://www.nikkei-science.com/201707_080.html

http://www3.nhk.or.jp/news/html/20170615/k10011018411000.html

http://www.asahi.com/articles/ASK6H6S9LK6HTLVB012.html

https://headlines.yahoo.co.jp/hl?a=20170616-00010000-asahibc-l27