Oppenheim, A.V. <br/><br/>
Discreate time signal processing 

 - NewDelhi  Pearson Prentice hall  1999 
 - 888p. 
<br/><br/><label>ISBN: </label>81 317 0492 0 
<br/><br/><label>Dewey Class. No.: </label>621.38043  / O52D