Links
[1] http://www.sdi.re.kr/%23
[2] http://facebook.com/sharer.php?u=http%3A%2F%2Fwww.sdi.re.kr%2Fnode%2F60882&t=2018%EB%85%84%2012%EC%9B%94%20%EC%86%8C%EB%B9%84%EA%B2%BD%EA%B8%B0%EC%A7%80%EC%88%98%20%EC%A0%84%EB%85%84%20%EB%8F%99%EC%9B%94%EB%8C%80%EB%B9%84%204.3%25%20%EC%83%81%EC%8A%B9%2C%20%EC%86%8C%EB%B9%84%20%ED%98%B8%ED%99%A9%20%EC%A7%80%EC%86%8D
[3] http://twitter.com/intent/tweet?url=http%3A%2F%2Fwww.sdi.re.kr%2Fnode%2F60882&text=2018%EB%85%84%2012%EC%9B%94%20%EC%86%8C%EB%B9%84%EA%B2%BD%EA%B8%B0%EC%A7%80%EC%88%98%20%EC%A0%84%EB%85%84%20%EB%8F%99%EC%9B%94%EB%8C%80%EB%B9%84%204.3%25%20%EC%83%81%EC%8A%B9%2C%20%EC%86%8C%EB%B9%84%20%ED%98%B8%ED%99%A9%20%EC%A7%80%EC%86%8D
[4] http://www.sdi.re.kr/si_download/60882/22930
[5] http://www.sdi.re.kr/paper