근거에 해당되는 자료들입니다.
https://blog.naver.com/dolo2/223693627939
https://blog.naver.com/dolo2/223697882043
https://code004.tistory.com/entry/%EA%B4%91%EC%97%AD%EC%9E%90%EC%82%AC%EA%B3%A0-%ED%98%84%ED%99%A9
https://hue2013.tistory.com/entry/%EC%83%81%EA%B0%80-%EA%B6%8C%EB%A6%AC%EA%B8%88-%EC%B2%B4%ED%81%AC
https://bkculture.tistory.com/entry/%EB%8C%80%EC%B9%98%EB%8F%99-%EC%88%98%EA%B0%95%EB%A3%8C
https://review4us.tistory.com/21
https://review4us.tistory.com/20