Ziemer, Rodger E..  <br/><br/>
Signals and Systems :   Continuous and Discrete /  
Ziemer Rodger E., Tranter William H., Fannin D.Ronald. 
 - 3 edition. 
 - New York :   Macmillan,   1993. 
 - XVI, 624 s.:   il.;   24 cm. 
<br/><br/><label>ISBN: </label>0024316415