Gelfand, I. M. <br/><br/>
Calculus of variations/ 
I. M. Gelfand and S. V. Fomin. 
 - Rev. English ed.  Translated and edited by Richard A. Silverman. 
 - Englewood Cliffs, N.J.:  Prentice-Hall,  [1963]. 
 - vii, 232 p.:  diagrs.,  24 cm. 
 - Selected Russian publications in the mathematical sciences .
<br/><br/>Bibliography: p. 227. 
<br/><br/><label>LCCN: </label>63018806 //r854 
<br/><br/><label>Nat. Bib. No.: </label>GB64-882 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Calculus of variations.<br/>Cálculo de variações.<br/>Matematica.
<br/><br/><label>Dewey Class. No.: </label>515.64