์ผ์๋ธ๋ฆฌ์ง๋, ์์ธ ํ์ด๋จธ ์ฆ์ ์งํ ๊ณผ์ ์ต์ด๋ก ๋ฐํ๋ด
https://www.sciencetimes.co.kr/news/%ec%82%ac%eb%9e%8c-%eb%87%8c%ec%97%90-%ec%95%8c%ec%b8%a0%ed%95%98%ec%9d%b4%eb%a8%b8-%ec%96%b5%ec%a0%9c-%ea%b8%b0%eb%8a%a5%ec%9d%b4-%ec%9e%88%eb%8b%a4/#.YYjlJEmeIXA.link
https://www.sciencetimes.co.kr/news/%ec%82%ac%eb%9e%8c-%eb%87%8c%ec%97%90-%ec%95%8c%ec%b8%a0%ed%95%98%ec%9d%b4%eb%a8%b8-%ec%96%b5%ec%a0%9c-%ea%b8%b0%eb%8a%a5%ec%9d%b4-%ec%9e%88%eb%8b%a4/#.YYjlJEmeIXA.link
https://www.sciencetimes.co.kr/news/%ec%82%ac%eb%9e%8c-%eb%87%8c%ec%97%90-%ec%95%8c%ec%b8%a0%ed%95%98%ec%9d%b4%eb%a8%b8-%ec%96%b5%ec%a0%9c-%ea%b8%b0%eb%8a%a5%ec%9d%b4-%ec%9e%88%eb%8b%a4/#.YYjlJEmeIXA.