1. Induction Motors with Die-Cast Copper, Motors with Die-Cast Copper Rotors,2006
2. Induction Motors or Electric Motors, History and Definitions, Wikipedia.com search for electric motors also induction motors.
3. Design and comparison between IM and PMSM for hybrid electrical vehicles;Kim,2010
4. Designing squirrel cage rotor slots with high conductivity;Kirtley,2006
5. Copper in the Rotor for Lighter, Longer Lasting Motors;Stark,2005