1. Dave Cutcher., Electronic Circuits for the Evil Genius, McGraw-Hills Publications, New York, 20011.
2. Douglas H. Williams., PDA Robotics: Using Your PDA to Control Your Robot, McGraw-Hills Publications, New York, 2004.
3. Industrial Servo Control Systems: Fundamentals and Applications;Younkin,2006
4. Robots Androids and Animatrons: 12 Incredible Projects You Can Build, Second;Iovine,2007
5. Cirstea;Marcian,2003