Clarke, F. H. and others <br/><br/>
Nonsmooth analysis and control theory   

 - New York  Springer-Verlag  1998 
 - xiii, 276p. Index, Bibl. 
 - Graduate texts in Mathematics, v. 178 .
<br/><br/>  
<br/><br/><label>Dewey Class. No.: </label>519.91  / C597.NA