Oppenheim, Alan V. <br/><br/>
Signals and systems / 

 - 2nd ed. 
 - USA :  Prentice hall,  c1997. 
 - xxx, 957 p. :  ill. ;  23 cm. 
<br/><br/> Includes bibliographical references and index. 
<br/><br/><label>ISBN: </label>0136511759 
<br/><br/><label>LC Class. No.: </label>D4014 
<br/><br/><label>Dewey Class. No.: </label>621.3822320  / OPP