Singh, L. P. <br/><br/>
Digital protection :  protective relaying from electromechanical to microprocessor / 
L. P. Singh 
 - New York :  John Wiley & Sons,  1994 
<br/><br/>Includes references & index. 
<br/><br/><label>ISBN: </label>0470234369 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Digital protection<br/>Electromechanical
<br/><br/><label>Dewey Class. No.: </label>621.3  / SIN