https://www.syu.ac.kr/grad/%ec%99%b8%ea%b5%ad%ec%9d%b8-%ec%b6%9c%ec%9e%85%ea%b5%ad%ea%b4%80%eb%a0%a8-%ec%9e%ac%ec%9e%85%ea%b5%ad%ed%97%88%ea%b0%80-%eb%a9%b4%ec%a0%9c-%ec%a4%91%eb%8b%a8-%eb%b0%8f-%ec%9e%a5%ea%b8%b0%ec%b2%b4/%ec%9e%ac%ec%9e%85%ea%b5%ad%ed%97%88%ea%b0%80-%eb%a9%b4%ec%a0%9c-%ec%a4%91%eb%8b%a8-%ec%95%88%eb%82%b4%eb%ac%b8%ed%95%9c%ea%b8%80-2/