Links
[1] http://www.sdi.re.kr/%23
[2] http://facebook.com/sharer.php?u=http%3A%2F%2Fwww.sdi.re.kr%2Fnode%2F40890&t=%EC%84%9C%EC%9A%B8%EC%8B%9C%EB%AF%BC%EC%9D%98%20%EA%B0%9C%EC%9D%B8%20%EB%B0%8F%20%EC%A7%80%EC%97%AD%20%ED%9A%A8%EA%B3%BC%EC%97%90%20%EC%9D%98%ED%95%9C%20%EA%B1%B4%EA%B0%95%EB%B6%88%ED%8F%89%EB%93%B1
[3] http://twitter.com/intent/tweet?url=http%3A%2F%2Fwww.sdi.re.kr%2Fnode%2F40890&text=%EC%84%9C%EC%9A%B8%EC%8B%9C%EB%AF%BC%EC%9D%98%20%EA%B0%9C%EC%9D%B8%20%EB%B0%8F%20%EC%A7%80%EC%97%AD%20%ED%9A%A8%EA%B3%BC%EC%97%90%20%EC%9D%98%ED%95%9C%20%EA%B1%B4%EA%B0%95%EB%B6%88%ED%8F%89%EB%93%B1
[4] http://www.sdi.re.kr/taxonomy/term/15701
[5] http://www.sdi.re.kr/si_download/40890/6854
[6] http://www.sdi.re.kr/studies_on/15701