Singh, L.P. <br/><br/>
Digital protection: protective relaying from electromechanical to microprocessor 
/L.P.Singh 
 - New York  John Wiley & Sons  1994 
 - vii, 231 p. 
<br/><br/> Includes index. 
<br/><br/><label>ISBN: </label>470234369 
<br/><br/><label>Dewey Class. No.: </label>621.395  / SIN