Links
[1] http://www.sdi.re.kr/%23
[2] http://facebook.com/sharer.php?u=http%3A%2F%2Fwww.sdi.re.kr%2Fnode%2F40460&t=%5B%EB%85%BC%EB%AC%B8%5D%20%EC%9E%AC%EC%82%B0%EC%84%B8%20%EC%84%B8%EC%88%98%20%EB%B3%80%ED%99%94%20%EC%A0%84%EB%A7%9D%EA%B3%BC%20%EC%A0%95%EC%B1%85%EA%B3%BC%EC%A0%9C
[3] http://twitter.com/intent/tweet?url=http%3A%2F%2Fwww.sdi.re.kr%2Fnode%2F40460&text=%5B%EB%85%BC%EB%AC%B8%5D%20%EC%9E%AC%EC%82%B0%EC%84%B8%20%EC%84%B8%EC%88%98%20%EB%B3%80%ED%99%94%20%EC%A0%84%EB%A7%9D%EA%B3%BC%20%EC%A0%95%EC%B1%85%EA%B3%BC%EC%A0%9C
[4] http://www.sdi.re.kr/taxonomy/term/15666
[5] http://www.sdi.re.kr/si_download/40460/6424
[6] http://www.sdi.re.kr/studies_on/15666