Oppenheim, Alan V (et al) <br/><br/>
Signals and systems  

 - 2nd ed . 
 - PHI Learning Private Limited  New Delhi  1997 
 - xxx, 957 
<br/><br/>
<br/><br/><br/>E 
<br/><br/><label>Universal Decimal Class. No.: </label>621.38043 Opp