http://www.citylab.com/navigator/2015/07/new-york-city-wi-fi-trash-cans/... [4]
http://www.citylab.com/tech/2014/11/rip-pay-phones-hello-links/382857/ [5]
Links
[1] http://www.si.re.kr/%23
[2] http://facebook.com/sharer.php?u=http%3A%2F%2Fwww.si.re.kr%2Fnode%2F52614&t=%EC%9E%AC%ED%99%9C%EC%9A%A9%20%EC%93%B0%EB%A0%88%EA%B8%B0%ED%86%B5%20%ED%99%9C%EC%9A%A9%ED%95%B4%20%EB%AC%B4%EC%84%A0%EC%9D%B8%ED%84%B0%EB%84%B7%20%EB%AC%B4%EB%A3%8C%20%EA%B3%B5%EA%B8%89%28%EB%AF%B8%EA%B5%AD%20%EB%89%B4%EC%9A%95%E5%B8%82%29
[3] http://twitter.com/intent/tweet?url=http%3A%2F%2Fwww.si.re.kr%2Fnode%2F52614&text=%EC%9E%AC%ED%99%9C%EC%9A%A9%20%EC%93%B0%EB%A0%88%EA%B8%B0%ED%86%B5%20%ED%99%9C%EC%9A%A9%ED%95%B4%20%EB%AC%B4%EC%84%A0%EC%9D%B8%ED%84%B0%EB%84%B7%20%EB%AC%B4%EB%A3%8C%20%EA%B3%B5%EA%B8%89%28%EB%AF%B8%EA%B5%AD%20%EB%89%B4%EC%9A%95%E5%B8%82%29
[4] http://www.citylab.com/navigator/2015/07/new-york-city-wi-fi-trash-cans/398258/
[5] http://www.citylab.com/tech/2014/11/rip-pay-phones-hello-links/382857/
[6] http://www.si.re.kr/world_trends