Phillips, Charles L. <br/><br/>
Feedback control systems / 
Charles L. Phillips, Royce D. Harbor 
 - London :  Prentice-Hall International,  1988 
 - 626 p. :  ill. ;  25 cm. 
<br/><br/>Includes bibliographies and index 
<br/><br/><label>ISBN: </label>0133138917 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Feedback control systems