http://buzz-plus.com/article/2018/06/29/university-professor-is-on-fire/

https://headlines.yahoo.co.jp/hl?a=20180630-00000037-asahi-soci

https://digital.asahi.com/articles/DA3S13563588.html

https://www.kobe-np.co.jp/news/sougou/201806/0011400379.shtml

https://headlines.yahoo.co.jp/hl?a=20180630-00007513-cbcv-soci