Babu, Ramesh R and Anandanatarajan <br/><br/>
Signals and systems / 

 - 4th ed 
 - Chennai,  Scitech Publications  c2013. 
 - ill. ;  1.4 p. ;  24 cm. 
<br/><br/><label>LC Class. No.: </label>19151-19155 
<br/><br/><label>Dewey Class. No.: </label>621.3822