Ledyaev, Yu. S. <br/><br/>
Nonsmooth analysis and control theory / 
Ledyaev, Yu. S. 
 - New York:  Springer,  1998. 
 - xii,276p.;24cm 
 - Graduate Texts in Mathematics/no.178/ed.by S. Axler .
<br/><br/>Includes bibliographical references. 
<br/><br/><label>ISBN: </label>0387983368 
<br/><br/><label>Dewey Class. No.: </label>515.64 NON