http://news.donga.com/Newsletter/3/all/20140224/61148492/1

http://news.naver.com/main/read.nhn?mode=LSD&mid=sec&oid=020&aid=0002535230&sid1=001

http://www.ajunews.com/view/20140218094553802

http://www.itworld.co.kr/slideshow/77934

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