Links
[1] http://www.si.re.kr/%23
[2] http://facebook.com/sharer.php?u=http%3A%2F%2Fwww.si.re.kr%2Fnode%2F45596&t=%EB%8F%84%EC%8B%9C%EC%9D%98%20%EC%8A%A4%EB%AA%A8%EA%B7%B8%EB%A5%BC%20%ED%9D%A1%EC%88%98%ED%95%98%EC%97%AC%20%EC%95%88%EC%A0%84%ED%95%9C%20%EB%AC%BC%EC%A7%88%EB%A1%9C%20%EB%B3%80%ED%99%94%EC%8B%9C%ED%82%A4%EB%8A%94%20%EA%B1%B4%EB%AC%BC%20%EA%B1%B4%EC%B6%95%20%28%EB%A9%95%EC%8B%9C%EC%BD%94%20%EB%A9%95%EC%8B%9C%EC%BD%94%EC%8B%9C%ED%8B%B0%E5%B8%82%29
[3] http://twitter.com/intent/tweet?url=http%3A%2F%2Fwww.si.re.kr%2Fnode%2F45596&text=%EB%8F%84%EC%8B%9C%EC%9D%98%20%EC%8A%A4%EB%AA%A8%EA%B7%B8%EB%A5%BC%20%ED%9D%A1%EC%88%98%ED%95%98%EC%97%AC%20%EC%95%88%EC%A0%84%ED%95%9C%20%EB%AC%BC%EC%A7%88%EB%A1%9C%20%EB%B3%80%ED%99%94%EC%8B%9C%ED%82%A4%EB%8A%94%20%EA%B1%B4%EB%AC%BC%20%EA%B1%B4%EC%B6%95%20%28%EB%A9%95%EC%8B%9C%EC%BD%94%20%EB%A9%95%EC%8B%9C%EC%BD%94%EC%8B%9C%ED%8B%B0%E5%B8%82%29
[4] http://www.fastcoexist.com/1681660/this-beautiful-mexico-city-building-eats-the-citys-smog?utm_source=twitter&utm_medium=feed&utm_campaign=Feed%3A%20fastcompany/headlines%20%28Fast%20Company%29#1
[5] http://latino.foxnews.com/latino/lifestyle/2013/03/29/mexico-city-hospital-eats-away-smog-pollution/
[6] http://prosolve.elegantembellishments.net/app_ceiling.htm
[7] http://www.si.re.kr/world_trends