Borwein, Jonathan M. and Zhu, Qiji J. <br/><br/>
Techniques of variational analysis   

 - New York  Springer Science+Business Media, Inc.  2005 
 - vi, 362p. Bibl. Index 
 - CMS books in mathematics .
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<br/><br/><label>ISBN: </label>9780387242989  
<br/><br/><label>Dewey Class. No.: </label>515.64  / B739.TV