https://buzzap.jp/news/20180507-jsdf-kaiken/

http://www.yomiuri.co.jp/culture/20180512-OYT1T50117.html

https://headlines.yahoo.co.jp/hl?a=20180511-00050024-yom-soci

http://blog.livedoor.jp/schulze/archives/52213856.html

http://kounomaki.blog84.fc2.com/blog-entry-1081.html