http://book.asahi.com/reviews/reviewer/2016121800005.html

http://www.efe.com/efe/espana/gente/una-familia-japonesa-fabrica-el-papel-mas-fino-del-mundo-similar-a-la-piel-humana/10007-3105001

http://gigazine.net/news/20161223-jet-engine-clean-air/

http://www.news-postseven.com/archives/20161219_475378.html

http://www.sankei.com/affairs/news/161224/afr1612240013-n1.html