Horowitz,Stanley H <br/><br/>
Power System Relaying 

 - 4th.ed. 
 - U.K  John Wiley  2015 
 - xv,381p. 
<br/><br/><label>ISBN: </label> RS 8830.60 
<br/><br/><label>Dewey Class. No.: </label>621.17 HOR,S.H