Oppenheim ,. <br/><br/>
Discrete time Signal Processing /  Textual Documents 

 - 2 nd ed . 
 - New Delhi  Dorling Kindersley (India) Pvt.Ltd. Licensees of Pearson Education  2011 
 - 888:  23*17. 
<br/><br/><label>ISBN: </label>9788131704929   
<br/><br/><label>Dewey Class. No.: </label>621.3822  / OPP