Ram, Badri <br/><br/>
Power system protection and switchgear / 
Badri Ram and D.N. Vishwakarma 
 - 2nd ed. 
 - New Delhi :  McGraw-Hill Professional,  2011 
 - xvi,670 p.  :  ill. ;  22 cm. 
<br/><br/>Includes bibliographical references and index 
<br/><br/><label>ISBN: </label>9780071077743 007107774X 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Protective relays<br/>Electric circuit-breakers<br/>Electric power systems--Protection