Optimal control : 
Whittle, Peter. 
 - Chichester ; | New York :  Wiley,  1996 
 - ix, 464 p. :  ill. ;  23 cm. 
 - Wiley-Interscience series in systems and optimization .
<br/><br/><label>ISBN: </label>0471956791 (hc : acid-free paper) | 0471960993 (pb : acid-free paper)