archive
원문 _ http://www.nocutnews.co.kr/news/4969966
원문 _ http://www.hani.co.kr/arti/economy/it/828771.html
원문 _ http://ppss.kr/archives/140473
원문 _ http://www.huffingtonpost.kr/2017/11/10/story_n_18519250.html
원문 _ http://smartaedi.tistory.com/109
원문 _ http://ttimes.co.kr/view.html?no=2017101810157791750
원문 _ http://mtech.mk.co.kr/view.php?year=2017&sc=51600002&no=668090