Ziemer, Rodger E. <br/><br/>
Signals and systems :   continuous and discrete / 
Rodger E. Ziemer, William H. Tranter, D. Ronald Fannin 
 - 4th ed 
 - Upper Saddle River, NJ:   Prentice Hall,   1998 
 - xvii, 622 p.;   24 cm. 
<br/><br/> Includes index 
<br/><br/><label>ISBN: </label>013496456X 
<br/><br/><label>Subjects--Topical Terms: </label><br/>System analysis<br/>Discrete-time systems<br/>Digital filters (Mathematics)