http%3A%2F%2Fwww.phiko.kr%2Fbbs%2Fboard.php%3Fbo_table%3Dz8_07%26wr_id%3D65%26sca%3D%25EC%259D%25B4%25EB%25B9%2584%25EC%2597%25A0%25EB%25A6%25AC%25EB%258D%2594
3.1 %EA%B4%80%EB%A0%A8 %EC%8B%9C%ED%97%98%EC%84%B1%EC%A0%81%EC%84%9C