http://www.newsis.com/view/?id=NISX20171027_0000131053&cID=10810&pID=10800
http://news.mt.co.kr/mtview.php?no=2017102819167490416&outlink=1&ref=http%3A%2F%2Fsearch.naver.com
http://www.fnnews.com/news/201710271538039354