Carl, Siegfried  <br/><br/>
Nonsmooth variational problems and their inequalities:  comparison principles and applications / 

 - New York:  Springer Science+Business Media, Inc.,  2007 
 - x, 395p. Bibl. Index. 
 - Springer monographs in Mathematics .
<br/><br/><label>ISBN: </label>0387306536 
<br/><br/><label>Dewey Class. No.: </label>519.91  / C278.NV