https://www.syu.ac.kr/sw/2015-%ea%b5%b0%ed%8f%ac%ec%8b%9c-%ec%a3%bc%eb%aa%bd%ec%a2%85%ed%95%a9%ec%82%ac%ed%9a%8c%eb%b3%b5%ec%a7%80%ea%b4%80-%ed%95%98%ea%b3%84-%eb%b0%a9%ed%95%99-%ec%8b%a4%ec%8a%b5%ec%83%9d-%eb%aa%a8%ec%a7%91/