Links
[1] http://www.sdi.re.kr/%23
[2] http://facebook.com/sharer.php?u=http%3A%2F%2Fwww.sdi.re.kr%2Fnode%2F40400&t=%5B%EC%97%B0%EA%B5%AC%EB%85%BC%EB%AC%B8%5D%20%EA%B8%B0%ED%9B%84%ED%8A%B9%EC%84%B1%EC%9D%84%20%EA%B3%A0%EB%A0%A4%ED%95%9C%20%EB%8F%84%EC%8B%9C%EA%B3%84%ED%9A%8D%EC%A0%9C%EB%8F%84%EC%9D%98%20%EB%8F%84%EC%9E%85%EA%B3%BC%20%EC%A0%81%EC%9A%A9%20%EA%B0%80%EB%8A%A5%EC%84%B1%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%2F40400&text=%5B%EC%97%B0%EA%B5%AC%EB%85%BC%EB%AC%B8%5D%20%EA%B8%B0%ED%9B%84%ED%8A%B9%EC%84%B1%EC%9D%84%20%EA%B3%A0%EB%A0%A4%ED%95%9C%20%EB%8F%84%EC%8B%9C%EA%B3%84%ED%9A%8D%EC%A0%9C%EB%8F%84%EC%9D%98%20%EB%8F%84%EC%9E%85%EA%B3%BC%20%EC%A0%81%EC%9A%A9%20%EA%B0%80%EB%8A%A5%EC%84%B1%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/15660
[5] http://www.sdi.re.kr/si_download/40400/6368
[6] http://www.sdi.re.kr/studies_on/15660