Rao, T S Madhva. <br/><br/>
Digital numerical relays 

 - New Delhi :  Tata Mcgraw Hill,  1994 
 - 227. 
<br/><br/><label>ISBN: </label>0 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Applied physics
<br/><br/><label>Dewey Class. No.: </label>621.382  / RAO