Links
[1] http://www.sdi.re.kr/%23
[2] http://facebook.com/sharer.php?u=http%3A%2F%2Fwww.sdi.re.kr%2Fnode%2F38539&t=%ED%99%94%EB%AC%BC%EC%B0%A8%EB%9F%89%20%EB%8F%84%EC%8B%AC%ED%86%B5%ED%96%89%EC%A7%84%EC%9E%85%EC%A0%9C%ED%95%9C%EC%9D%98%20%ED%83%80%EB%8B%B9%EC%84%B1%20%EB%B6%84%EC%84%9D
[3] http://twitter.com/intent/tweet?url=http%3A%2F%2Fwww.sdi.re.kr%2Fnode%2F38539&text=%ED%99%94%EB%AC%BC%EC%B0%A8%EB%9F%89%20%EB%8F%84%EC%8B%AC%ED%86%B5%ED%96%89%EC%A7%84%EC%9E%85%EC%A0%9C%ED%95%9C%EC%9D%98%20%ED%83%80%EB%8B%B9%EC%84%B1%20%EB%B6%84%EC%84%9D
[4] http://www.sdi.re.kr/taxonomy/term/15652
[5] http://www.sdi.re.kr/si_download/38539/6241
[6] http://www.sdi.re.kr/studies_on/15652