Ziegler, Gerhard <br/><br/>
Numerical distance protection :  principles and applications / 
by Gerhard Ziegler ; [editor, Siemens Aktiengesellschaft] 
 - 4th updated and enlarged ed. 
 - Erlangen :  Publicis Corporate Pub.,  2011 
 - 419 p. :  ill. ;  26 cm. 
<br/><br/>Includes bibliographical references and index 
<br/><br/><label>ISBN: </label>9783895783814 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Electric power systems--Protection<br/>Protective relays