»ý¸í¿¬ "Ç×¾ÏÁ¦¿¡ ³»¼º °®´Â ¾Ï Ä¡·áÁ¦ °³¹ß¿¡ ±â¿©"
https://www.sciencetimes.co.kr/news/%eb%82%9c%ec%b9%98%ec%84%b1-%ec%9c%84%ec%95%94-%ec%b9%98%eb%a3%8c%ed%95%a0-%ec%83%88%eb%a1%9c%ec%9a%b4-%ec%84%b8%ed%8f%ac-%ec%82%ac%eb%a9%b8-%ea%b2%bd%eb%a1%9c-%ec%b0%be%ec%95%98%eb%8b%a4/