RAm, Badri and Vishwakarma, D. N. <br/><br/>
Power system protection and switchgear / 

 - 6th ed. 
 -  Tata McGraw-Hill,  c2005. 
 - 0  ill. ; 
<br/><br/><label>ISBN: </label>NA 
<br/><br/><label>Dewey Class. No.: </label>621.317