Oppenhein, A.V.; Schafer, R.W. and Buck, John R. <br/><br/>
Discrete time signal processing 

 - 2nd ed. 
 - New Delhi  Pearson  1999 
<br/><br/><label>ISBN: </label>9788131704929 
<br/><br/><label>Dewey Class. No.: </label>621.3822  / N99 OPP S