Links
[1] http://www.sdi.re.kr/%23
[2] http://facebook.com/sharer.php?u=http%3A%2F%2Fwww.sdi.re.kr%2Fnode%2F40913&t=%EC%9E%90%EC%B9%98%EA%B5%AC%20%EC%9E%90%EC%B2%B4%EC%9E%AC%EC%9B%90%20%ED%99%95%EB%8C%80%EC%9D%98%20%EC%9D%B4%EC%A0%84%EC%9E%AC%EC%9B%90%EC%97%90%20%EB%8C%80%ED%95%9C%20%ED%9A%A8%EA%B3%BC%20%EB%B6%84%EC%84%9D
[3] http://twitter.com/intent/tweet?url=http%3A%2F%2Fwww.sdi.re.kr%2Fnode%2F40913&text=%EC%9E%90%EC%B9%98%EA%B5%AC%20%EC%9E%90%EC%B2%B4%EC%9E%AC%EC%9B%90%20%ED%99%95%EB%8C%80%EC%9D%98%20%EC%9D%B4%EC%A0%84%EC%9E%AC%EC%9B%90%EC%97%90%20%EB%8C%80%ED%95%9C%20%ED%9A%A8%EA%B3%BC%20%EB%B6%84%EC%84%9D
[4] http://www.sdi.re.kr/taxonomy/term/15702
[5] http://www.sdi.re.kr/si_download/40913/6877
[6] http://www.sdi.re.kr/studies_on/15702