https://www.syu.ac.kr/blog/2023%eb%85%84-%ea%b5%ad%ec%a0%9c%ed%99%98%ea%b2%bd%ec%a0%84%eb%ac%b8%ea%b0%80-%ec%96%91%ec%84%b1%ea%b3%bc%ec%a0%95-%ea%b5%90%ec%9c%a1%ec%83%9d-%eb%aa%a8%ec%a7%91-%ea%b3%b5%ea%b3%a0/%eb%b6%99%ec%9e%844-%ed%99%8d%eb%b3%b4-%ed%8f%ac%ec%8a%a4%ed%84%b0_1/