Gelʹfand, I. M. <br/><br/>
Calculus of variations / 
I.M. Gelfand, S.V. Fomin. 
 - Revised English ed. / 
 - Englewood Cliffs :  Prentice-Hall,  c1963. 
 - vii, 232 p. :  ill. ;  23 cm. 
 - Selected Russian publications in the mathematical sciences .
<br/><br/> Includes index. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Calculus of variations.
<br/><br/><label>Dewey Class. No.: </label>515.64  / GEC 1963