Philips, Charles L. <br/><br/>
Feedback control systems / 
Charles L. Phillips, Royce D. Harbor 
 - 4th ed. 
 - Upper Saddle River, N.J. :  Prentice Hall,  2000 
 - xiii, 658 p. :  ill. ;  25 cm. 
<br/><br/> Includes bibliographical references and index 
<br/><br/><label>ISBN: </label>0139490906 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Feedback control systems