Ekeland, Ivar <br/><br/>
Convex analysis and variational problems  / 

 - London:  North-Holland,  1976 
 - ix, 402p. Index. Bibl. 
 - Studies in Mathematics and its applications   v.1 .
<br/><br/><label>Dewey Class. No.: </label>515.64  / Ek36.CA