Signals and systems / 
I. J. Nagrath ... [et al.] 
 - New Delhi, India :  Tata McGraw-Hill,  2001 
 - x, 606 p. :  ill. ;  23 cm 
<br/><br/>Includes bibliographical references [587-588] and index 
<br/><br/><label>ISBN: </label>0074637711 9780074637715 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Signal processing<br/>System analysis<br/>Discrete-time systems<br/>Linear time invariant systems<br/>Digital filters (Mathematics)