Links
[1] http://www.sdi.re.kr/%23
[2] http://facebook.com/sharer.php?u=http%3A%2F%2Fwww.sdi.re.kr%2Fnode%2F40564&t=%5B%EB%85%BC%EB%AC%B8%5D%20%EB%8F%99%EC%A0%81%EC%B2%B4%EA%B3%84%EB%A5%BC%20%EC%9D%B4%EC%9A%A9%ED%95%9C%20%EA%B5%90%ED%86%B5%EB%A7%9D%EB%AA%A8%ED%98%95%EC%9D%98%20%EA%B0%9C%EB%B0%9C
[3] http://twitter.com/intent/tweet?url=http%3A%2F%2Fwww.sdi.re.kr%2Fnode%2F40564&text=%5B%EB%85%BC%EB%AC%B8%5D%20%EB%8F%99%EC%A0%81%EC%B2%B4%EA%B3%84%EB%A5%BC%20%EC%9D%B4%EC%9A%A9%ED%95%9C%20%EA%B5%90%ED%86%B5%EB%A7%9D%EB%AA%A8%ED%98%95%EC%9D%98%20%EA%B0%9C%EB%B0%9C
[4] http://www.sdi.re.kr/taxonomy/term/15676
[5] http://www.sdi.re.kr/si_download/40564/6528
[6] http://www.sdi.re.kr/studies_on/15676