Johns, A. T. <br/><br/>
Digital protection for power systems / 
A.T. Johns and S. K. Salman 
 - London :  Peter Peregrinus,  1995 
 - 203 p. :  ill. ;  24 cm. 
 - IEE power series ;  15 .
<br/><br/><label>ISBN: </label>0863411959 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Electric power systems--Protection<br/>Protective relays