Links
[1] http://www.sdi.re.kr/%23
[2] http://facebook.com/sharer.php?u=http%3A%2F%2Fwww.sdi.re.kr%2Fnode%2F46442&t=%EC%84%9C%EC%9A%B8%EC%8B%9C%20%EB%8C%80%EA%B8%B0%EC%A7%88%20%EB%AA%A8%EB%8B%88%ED%84%B0%EB%A7%81%20%EC%9E%90%EB%A3%8C%EB%A5%BC%20%ED%99%9C%EC%9A%A9%ED%95%9C%20%EB%8F%84%EB%A1%9C%EB%B6%80%EB%AC%B8%20%EB%8C%80%EA%B8%B0%EC%A7%88%20%EC%98%81%ED%96%A5%20%ED%8F%89%EA%B0%80%20%EB%B0%A9%EB%B2%95%EB%A1%A0%20%EA%B0%9C%EB%B0%9C
[3] http://twitter.com/intent/tweet?url=http%3A%2F%2Fwww.sdi.re.kr%2Fnode%2F46442&text=%EC%84%9C%EC%9A%B8%EC%8B%9C%20%EB%8C%80%EA%B8%B0%EC%A7%88%20%EB%AA%A8%EB%8B%88%ED%84%B0%EB%A7%81%20%EC%9E%90%EB%A3%8C%EB%A5%BC%20%ED%99%9C%EC%9A%A9%ED%95%9C%20%EB%8F%84%EB%A1%9C%EB%B6%80%EB%AC%B8%20%EB%8C%80%EA%B8%B0%EC%A7%88%20%EC%98%81%ED%96%A5%20%ED%8F%89%EA%B0%80%20%EB%B0%A9%EB%B2%95%EB%A1%A0%20%EA%B0%9C%EB%B0%9C
[4] http://www.sdi.re.kr/taxonomy/term/18661
[5] http://www.sdi.re.kr/si_download/46442/9863
[6] http://www.sdi.re.kr/studies_on/18661