Kamen, Edward W. <br/><br/>
Introduction to signals and systems  
Edward W. Kamen. 
 - Englewood Cliff  Macmillan  1990. 
 - 706 p. 
<br/><br/><label>ISBN: </label>0023629509 (hardcover)  $78.00 9780023629501 (hardcover) 
<br/><br/><label>Source: </label> 295.00 PKR