http://slowalk.tistory.com/2402

http://www.fastcampus.co.kr/dgn_class_prototyping/

https://medium.com/korean-odocs/%EC%B2%AB-%ED%95%B4%EC%99%B8-ui-%EB%94%94%EC%9E%90%EC%9D%B8-%ED%94%84%EB%A1%9C%EC%A0%9D%ED%8A%B8%EC%97%90%EC%84%9C-%EC%82%AC%EC%9A%A9%ED%95%9C-10%EA%B0%80%EC%A7%80%EC%9D%98-%EB%8F%84%EA%B5%AC%EB%93%A4-583b705d1cc#.etyn21g99

http://yslab.kr/94