http://news.livedoor.com/lite/article_detail/15427746/
http://www.afpbb.com/articles/-/3192903?cx_amp=all&act=all
https://jp.reuters.com/article/g20-fx-emerging-idJPKCN1MK0V2?rpc=122
https://matome.naver.jp/m/odai/2153920905377917101/2153921662081449003
https://www.buzzfeed.com/jp/takumiharimaya/20181011