Oppenheim, Alan V <br/><br/>
Signals and systems 

 - 1st 
 - New Delhi  Prentice Hall of India  1995 
 - xx,796p p. 
<br/><br/><label>ISBN: </label>81-203-0503-5 
<br/><br/><label>Subjects--Index Terms: </label>Discrete - time systems