Links
[1] http://www.si.re.kr/%23
[2] http://facebook.com/sharer.php?u=http%3A%2F%2Fwww.si.re.kr%2Fnode%2F45622&t=%EC%84%9C%EC%9A%B8%EC%8B%9C%20%EC%9E%A5%EC%95%A0%EC%9D%B8%EC%A0%95%EC%B1%85%20%EC%95%84%EC%A0%A0%EB%8B%A4%20%EB%B6%84%EC%84%9D%20%20
[3] http://twitter.com/intent/tweet?url=http%3A%2F%2Fwww.si.re.kr%2Fnode%2F45622&text=%EC%84%9C%EC%9A%B8%EC%8B%9C%20%EC%9E%A5%EC%95%A0%EC%9D%B8%EC%A0%95%EC%B1%85%20%EC%95%84%EC%A0%A0%EB%8B%A4%20%EB%B6%84%EC%84%9D%20%20
[4] http://www.si.re.kr/taxonomy/term/18533
[5] http://www.si.re.kr/si_download/45622/9096
[6] http://www.si.re.kr/studies_on/18533