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

 -  1976 
<br/><br/><label>Subjects--Uniform Titles: </label><br/>Caloulus of variations<br/>Convex Analysis
<br/><br/><label>Dewey Class. No.: </label>515.64  / E42C