Links
[1] http://www.sdi.re.kr/%23
[2] http://facebook.com/sharer.php?u=http%3A%2F%2Fwww.sdi.re.kr%2Fnode%2F40363&t=%EC%A7%80%EC%97%AD%EB%B0%B0%EC%B6%9C%ED%97%88%EC%9A%A9%EA%B8%B0%EC%A4%80%20%EC%84%A4%EC%A0%95%EC%97%90%20%EB%94%B0%EB%A5%B8%20%EA%B2%BD%EC%A0%9C%EC%A0%81%C2%B7%ED%99%98%EA%B2%BD%EC%A0%81%20%EC%98%81%ED%96%A5%EB%B6%84%EC%84%9D
[3] http://twitter.com/intent/tweet?url=http%3A%2F%2Fwww.sdi.re.kr%2Fnode%2F40363&text=%EC%A7%80%EC%97%AD%EB%B0%B0%EC%B6%9C%ED%97%88%EC%9A%A9%EA%B8%B0%EC%A4%80%20%EC%84%A4%EC%A0%95%EC%97%90%20%EB%94%B0%EB%A5%B8%20%EA%B2%BD%EC%A0%9C%EC%A0%81%C2%B7%ED%99%98%EA%B2%BD%EC%A0%81%20%EC%98%81%ED%96%A5%EB%B6%84%EC%84%9D
[4] http://www.sdi.re.kr/taxonomy/term/15656
[5] http://www.sdi.re.kr/si_download/40363/6332
[6] http://www.sdi.re.kr/studies_on/15656