http://www.kyoto-np.co.jp/politics/article/20170607000150

http://www.tokyo-np.co.jp/article/economics/list/201706/CK2017060402000129.html

http://kanz.jp/hanrei/data/html/201705/086795_hanrei.html https://this.kiji.is/239972889727827977

http://kanz.jp/hanrei/data/html/201705/086805_hanrei.html

http://blog.livedoor.jp/schulze/archives/52189123.html