Links
[1] http://www.sdi.re.kr/%23
[2] http://facebook.com/sharer.php?u=http%3A%2F%2Fwww.sdi.re.kr%2Fnode%2F40433&t=%5B%EC%97%B0%EA%B5%AC%EB%85%B8%ED%8A%B8%5D%20%EA%B0%95%EB%B6%81%20%ED%8A%B9%EC%84%B1%ED%99%94%20%EC%9E%AC%EA%B0%9C%EB%B0%9C
[3] http://twitter.com/intent/tweet?url=http%3A%2F%2Fwww.sdi.re.kr%2Fnode%2F40433&text=%5B%EC%97%B0%EA%B5%AC%EB%85%B8%ED%8A%B8%5D%20%EA%B0%95%EB%B6%81%20%ED%8A%B9%EC%84%B1%ED%99%94%20%EC%9E%AC%EA%B0%9C%EB%B0%9C
[4] http://www.sdi.re.kr/taxonomy/term/15663
[5] http://www.sdi.re.kr/si_download/40433/6398
[6] http://www.sdi.re.kr/studies_on/15663