Elgerd, Olle I <br/><br/>
Electric energy systems theory   :an introduction 

 - New Delhi  Tata Mc Graw - Hill  1971 
 - 564p. 
<br/><br/><label>Subjects--Index Terms: </label>Electric energy systems 
<br/><br/><label>Universal Decimal Class. No.: </label>621.3  / ELG