Links
[1] http://www.sdi.re.kr/%23
[2] http://facebook.com/sharer.php?u=http%3A%2F%2Fwww.sdi.re.kr%2Fnode%2F40365&t=%ED%95%9C%EA%B5%AD%EC%9D%98%20%EB%85%B8%EC%88%99%EC%9B%90%EC%9D%B8%EC%97%90%20%EA%B4%80%ED%95%9C%20%EC%97%B0%EA%B5%AC
[3] http://twitter.com/intent/tweet?url=http%3A%2F%2Fwww.sdi.re.kr%2Fnode%2F40365&text=%ED%95%9C%EA%B5%AD%EC%9D%98%20%EB%85%B8%EC%88%99%EC%9B%90%EC%9D%B8%EC%97%90%20%EA%B4%80%ED%95%9C%20%EC%97%B0%EA%B5%AC
[4] http://www.sdi.re.kr/taxonomy/term/15656
[5] http://www.sdi.re.kr/si_download/40365/6334
[6] http://www.sdi.re.kr/studies_on/15656