http://blog.naver.com/bh4724/150136962522
일반물리학( cutnelljohnson-8th), 복소해석학(실버만),회로이론 솔루션 7판 (Engineering circuit analysis 7th edition) - Hayt , Kemmerly, Durbin engineeringcircuitanalysi
http://cafe.daum.net/soho3456/IK0i/399
http://soho112-soho114.blogspot.com/2012/04/cutnelljohnson-8th-7-engineering.html