http://japanese.yonhapnews.co.kr/headline/2018/07/17/0200000000AJP20180717005700882.HTML

https://headlines.yahoo.co.jp/hl?a=20180717-00000621-san-soci

http://www.moj.go.jp/hisho/kouhou/hisho06_00539.html

https://diamond.jp/articles/-/174855

http://www.moj.go.jp/jinji/shihoushiken/jinji07_00230.html

https://www3.nhk.or.jp/news/html/20180717/k10011537371000.html

https://headlines.yahoo.co.jp/hl?a=20180717-00008217-bengocom-soci

https://www.oita-press.co.jp/1010000000/2018/07/17/JD0057113403

https://toyokeizai.net/articles/-/228734

http://bunshun.jp/articles/-/8115

http://blog.livedoor.jp/schulze/archives/52217627.html

http://blog.livedoor.jp/schulze/archives/52217580.html

https://headlines.yahoo.co.jp/hl?a=20180716-00000028-mai-soci

https://www.daily.co.jp/gossip/2018/07/14/0011445375.shtml

https://headlines.yahoo.co.jp/hl?a=20180715-00008207-bengocom-soci

http://www.at-s.com/news/article/social/shizuoka/515698.html

https://headlines.yahoo.co.jp/hl?a=20180714-00050133-yom-soci

http://www.shinmai.co.jp/news/nagano/20180715/KT180714ETI090006000.php

https://gigazine.net/news/20180713-south-pole-icecube-neutrino-detector/

https://www.asahi.com/articles/ASL6P560JL6PULFA015.html

https://johosokuhou.com/2018/07/14/7648/

https://headlines.yahoo.co.jp/hl?a=20180714-00008170-bengocom-soci

https://headlines.yahoo.co.jp/hl?a=20180714-00000046-mai-soci

https://diamond.jp/articles/-/174611

https://headlines.yahoo.co.jp/hl?a=20180712-00008203-bengocom-soci

https://headlines.yahoo.co.jp/hl?a=20180713-00050082-yom-soci

http://www.moj.go.jp/MINJI/minji03_00051.html

http://dtk.doorblog.jp/archives/52213459.html

https://headlines.yahoo.co.jp/hl?a=20180711-00027580-kana-l14

https://www.bengo4.com/c_5/n_8185/