http://ergate.tistory.com/entry/Titanium-%ED%8B%B0%ED%83%80%EB%8A%84-%ED%94%84%EB%A1%9C%EC%A0%9D%ED%8A%B8%EC%97%90-%EC%95%A0%EB%93%9C%EB%AA%B9%EC%9D%84-%EB%9D%84%EC%9B%8C%EB%B3%B4%EC%9E%90
http://ergate.tistory.com/entry/Titanium-%ED%8B%B0%ED%83%80%EB%8A%84-%ED%94%84%EB%A1%9C%EC%A0%9D%ED%8A%B8%EC%97%90-%EC%95%A0%EB%93%9C%EB%AA%B9%EC%9D%84-%EB%9D%84%EC%9B%8C%EB%B3%B4%EC%9E%90
