Optimal control and viscosity solutions of Hamilton-Jacobi-Bellman equations  
Bardi, M. 
 - Boston :  Birkhäuser,  1997 
 - xvii, 570 p. :  ill. ;  24 cm. 
<br/><br/><label>ISBN: </label>0817636404 (hardcover : acid-free paper) | 3764336404 (acid-free paper)