Gelfand, I. M. <br/><br/>
Calculus of Variations 

 - USA  Dover  2000 
 - vii, 232p. 
<br/><br/><label>ISBN: </label>970486322582 
<br/><br/><label>Subjects--Personal Names: </label><br/>Fomin, S. V.
<br/><br/><label>Dewey Class. No.: </label>515.64  / G25C