Gelfand, I. M. <br/><br/>
Calculus of Variations 
by I M Gerland and S V Fomin 
 - USA  Dover Publications Inc.  2003 
 - vii, 232p 
<br/><br/><label>ISBN: </label>9780486414485 
<br/><br/><label>Dewey Class. No.: </label>515.64  / P (ECE)