Oppenheim, Alan V. <br/><br/>
Discrete-time signal processing / 
Alan V. Oppenheim, Ronald W. Schafer. 
 - Englewood Cliffs, N.J. :  Prentice Hall,  c1989. 
 - xv, 879 p. :  ill. ;  25 cm. 
 - Prentice-Hall signal processing series. .
<br/><br/> Includes index. 
<br/><br/>Includes bibliographical references. 
<br/><br/><label>ISBN: </label>013216292X (hbk.) 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Signal processing--Mathematics.<br/>Discrete-time systems.