http://news.naver.com/main/read.nhn?mode=LSD&mid=sec&sid1=102&oid=003&aid=0000364070
http://ijunnong.net/new2/jn.php/post/18664
http://ko.wikipedia.org/wiki/%ED%97%88%EC%84%B8%EC%9A%B1_(1953%EB%85%84)