https://www.syu.ac.kr/grad/2020%eb%85%84-2%ed%95%99%ea%b8%b0-%ed%95%9c%ec%84%b1%eb%8c%80%ed%95%99%ea%b5%90-%ec%9d%bc%eb%b0%98%eb%8c%80%ed%95%99%ec%9b%90-%ed%95%99%ec%a0%90%ea%b5%90%eb%a5%98-%ec%8b%a0%ec%b2%ad-%ec%95%88%eb%82%b4/%ec%88%98%ea%b0%95%ec%8b%a0%ec%b2%ad-%ec%95%88%eb%82%b4_%eb%b6%99%ec%9e%84%ec%9e%90%eb%a3%8c-2/