Ekeland, Ivar <br/><br/>
Convex Analysis and Variational Problems   
by Ivar Ekeland and Roger Temam 
 - Philadelphia  SIAM  1999 
 - xiv, 402p 
 - Classics In Applied Mathematics  28 .
<br/><br/><label>ISBN: </label>9780898714500 
<br/><br/><label>Dewey Class. No.: </label>515.64  / N992