Mathpresso

• https://medium.com/qandastudy
• https://qanda.co.kr
• https://news.joins.com/article/23402742
• http://news.hankyung.com/article/201902288970a
• http://mbn.mk.co.kr/pages/news/newsView.php?news_seq_no=3678970
• http://news.mk.co.kr/newsRead.php?no=476286&year=2018
• http://techm.kr/bbs/board.php?bo_table=article&wr_id=5004
• http://www.asiae.co.kr/news/view.htm?idxno=2018061811292666206
• http://platum.kr/archives/102651
• http://www.zdnet.co.kr/news/news_view.asp?artice_id=20180503175036
• http://www.anewsa.com/detail.php?number=1312110&thread=10r02
• http://www.newsworks.co.kr/news/articleView.html?idxno=180717
• http://platum.kr/archives/89459
• http://news.hankyung.com/article/2017071759951
• http://magazine.hankyung.com/business/apps/news?nkey=2017061901125000131&mode=sub_view
• http://thebell.co.kr/free/content/ArticleView.asp?key=201612190100035020002089&svccode=03&page=43&sort=thebell_check_time