Akhiezer, Naum I. <br/><br/>
Calculus of variations   
by Naum I. Akhiezer, tr. by Aline H. Frink 
 - New York  Blaisdell Publishing Company  1962 
 - viii, 247p. 
 - Blaisdell book in the pure and applied sciences .
<br/><br/><label>LCCN: </label>62-11834 
<br/><br/><label>Dewey Class. No.: </label>575.64  / N62;1