http://www.jiji.com/jc/article?k=000000016.000018852&g=prt

http://matimura.cocolog-nifty.com/matimulog/2016/10/consumer-f57f.html

http://kuronekonotsubuyaki.blog.fc2.com/blog-entry-1165.html

http://www.yomiuri.co.jp/local/kyoto/news/20161020-OYTNT50075.html

http://www.moj.go.jp/MINJI/minji07_00197.html