Rockafellar, R. Tyrrell <br/><br/>
Variational analysis  / 

 - Berlin:  Springer-Verlag,  2004 
 - xiii, 734p. Bibl. Index. 
 - Grundlehren der Mathematischen Wissenschaften   317 .
<br/><br/><label>ISBN: </label>3540627723 
<br/><br/><label>Dewey Class. No.: </label>515.64  / R682.VA