Nagrath, I. J, Kothari, D. P <br/><br/>
Theory and problems of electric machines 

 - NEWDELHI  TATA MCGRAW HILL  1992 
 - 297P 
<br/><br/><label>ISBN: </label>0-07-460276-4 
<br/><br/><label>Dewey Class. No.: </label>620.31042 NAG'T