일단 정체
http://www.yonhapnews.co.kr/bulletin/2010/06/28/0200000000AKR20100628104900061.HTML?did=1179m
그리고 기술
http://cafe.daum.net/hoseo-12/YDdp/5?docid=1FtDo|YDdp|5|20090403053250&q=%BF%B9%BC%FA%20%BC%D5%B4%E7%B1%B8&srchid=CCB1FtDo|YDdp|5|20090403053250
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